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  • 1kz chip facts

    Hi.
    I am considering adding a performance chip to my standard 1kz te prado,(2005 model) i have read all the promises of more power and better fuel economy however I am suspicious of these promises and would appreciate feedback for owners of this particular engine who have actually added a performance chip and can speak from experience as to:

    1- HOW MUCH MORE POWER THEY GAINED.
    2- WAS FUEL ECONOMY BETTER OR WORSE
    3- ANY SIDE EFFECTS SUCH AS BLOWING SMOKE ETC.
    4-IS THERE REDUCED ENGINE LIFE OR OTHER ENGINE RELIABILITY ISSUES.
    5- ALSO WHAT BRAND CHIP WAS USED.

    I have read this site and it gave me more questions than answers.
    http://www.lcool.org/technical/elec_die ... uning.html

    Answers to the questions i have raised would assist in deciding if its a good option or not, i would hate to compromise engine life or reliability, or lower my fuel economy.


    Regards

    Jeff

  • #2
    Re: 1kz chip facts

    jaywindy I'm in the same boat,looking at options, except mines a 2001 model...

    With regards to fuel usage, when cruising the efficiency of the engine should be on par with the original design. However if you use more power during acceleration then you will use more fuel.

    The biggest issue with the 1ktze is it doesn't like to get hot.....it won't overheat if all of the cooling system is functioning well, but a faulty radiator fan or a leaking hose/core would be enough for the engine to overheat. Adding the extra horsepower will make overheating occur earlier if the cooling system is sub standard. This is something I have thought about before reconsidering a chip upgrade.

    I have an engine temperature monitor in which I can set the warning temperature & I can monitor it in difficult terrain or hilly country. I would advise this anyway even without the chip as your car gets older. The 1ktze will not like loosing a hose, by the time you see something wrong its more than likely too late.

    To my knowledge the Dtronic is no longer made, so that would leave the DPChip as the only one I know off that claims to do more than just add bulk fuel (such as injector timing)....happy for anyone else to advise on this though...

    EDIT: After reading the thread below....maybe it doesn't do any more than extend the injector timing & adding more fuel that way......

    Cheers

    PS. I found this thread, it contains a lot of good information even if it takes a while to come to the surface..... :wink:
    http://www.4wdaction.com.au/forum/showt ... hp?t=26223
    Richard
    2011 GXL TD Auto Prado Silver

    Comment


    • #3
      Re: 1kz chip facts

      Jaywindy,

      I'm happy to share the following insights based on my experience with a manual 1kz and a chip

      1. some increase in power (definitely noticible, no hard numbers) but the real benefit has been an improvement in driveability with a wider power band. For example, there is no longer a dead spot when changing from 1st to 2nd going up a hill without having to wring the motor to death

      2. Fuel economy is about 8-10% better (only over 2 tanks) due to having to use less of the loud pedal, not because it's become inherently more efficient

      3. No noticable increase in smoke etc, again due to less fuel application

      4. I'm realistic that getting more performance from the motor will have some effect on longevity, but it's not extracting a huge amount more, so I don't believe it will extract a huge cost. You may wish to increase your monitoring of condition such as engine, exhaust and coolant temperatures as well as oil condition monitoring if you are really keen.

      5. Safari d-tronic, second hand purchase under $1000. I wouldn't pay the full retail price, i don't believe it offers value for money compared to other alternatives, of which this site and others have plenty of documentation, or saving the $$$ for a D4D or petrol if performance is important.

      In summary, would I do it again? yes I'd pay up to $1000.

      Hope this helps

      Cheers

      Ed
      Gone - 2006 TD Manual - Silver
      Current X3 35i (offroad capability limited, but 0-100 in 5.9 seconds...) - no Prados in Canada
      Return to Oz, something new and prado like (will miss actual acceleration)

      Comment


      • #4
        Re: 1kz chip facts

        Thanks Ed....

        I thought a little further on the use of chips & engine longevity.....

        The 1ktze is at factory 96kw & 343Nm.....with a chip & on an average trip, what percentage of the trip would the engine be asked to to produce more than that?

        1%?....5%?

        I generally only need full throttle when overtaking...to get to the point where it is safer to continue at a reduced throttle knowing you have more if needed. With a chip fitted I doubt that will change much as its not like you have a huge V8 under you foot if you need to get around faster so as with most diesel drivers you need to plan your overtaking allowing a lot more distance.

        On some of the freeway hills it is also required to maintain 110km/h...but only a few

        Those towing would be working the engine harder & more often, but then they are anyway....chip or no chip. (Hill climbs with a chip should be shorter in terms of time too)

        Cheers
        Richard
        2011 GXL TD Auto Prado Silver

        Comment


        • #5
          Re: 1kz chip facts

          Thanks guys for the comments, i still havent been able to decide if this is a good idea or not.
          Its a lot of money to fork out, I need to see some users comments regarding definate evidence that fuel economy is not compromised with a chip installed.
          These two are on ebay, has anyone used these?

          http://cgi.ebay.com.au/Tunit-Diesel-ECU ... 222wt_1163

          http://cgi.ebay.com.au/Cougar-Power-Chi ... 329wt_1113

          Thanks

          Jeff

          Comment


          • #6
            Re: 1kz chip facts

            Richard,

            Agree that you aren't using the extra power high up all the time, but the particular chip in question modifies the fuel delivery across the range so that may be a bit of a simplifcation in terms of the amount of time that the engine output/wear is being affected?

            However, due to the wider power band, the engine is more relaxed and not working as hard for any more general acceleration.

            And long duration towing or high speed running, i'd definitely go down the route of a lot of on board diagnostics...

            Jeff, my experience is definitely that consumption doesn't go up... (unless you change your driving style :twisted: )

            Ed
            Gone - 2006 TD Manual - Silver
            Current X3 35i (offroad capability limited, but 0-100 in 5.9 seconds...) - no Prados in Canada
            Return to Oz, something new and prado like (will miss actual acceleration)

            Comment


            • #7
              Re: 1kz chip facts

              The Tunit is for Common Rail and the other is for Non-Common Rail. I have the Tunit...it is ok but would look at the one that does more in the way of on board information to the chip and adjusted that way. If I every get the chance to sell this one I will and look into the others that do that. One of the best things I have done was increase the exhaust and that has given me better sound and better power in the long run.
              Manata 3" Exhaust, Blisten shocks, King Springs 50 mm lift, Poly Air Bags, Roof Rack, Iron Man Bull Bar, HID 50W LightForce XGT spotties, Daul Batteries, GME TX3440 & AE4705 ant, Upgraded window washer, Bonnet Scoop, Tunit chip, bonnet protector, headlight protector, Cooper STT's, ScangaugeII, Dash Mat, Endless Air, Stebel Nautilus, Diff Breathers, Water Sedimentor. ([b]Camprite TL8s [/b] Arrived ALIVE~!)

              Comment


              • #8
                Re: 1kz chip facts

                Originally posted by karrathaprado2
                The Tunit is for Common Rail and the other is for Non-Common Rail. I have the Tunit...it is ok but would look at the one that does more in the way of on board information to the chip and adjusted that way. If I every get the chance to sell this one I will and look into the others that do that. One of the best things I have done was increase the exhaust and that has given me better sound and better power in the long run.
                "Better sound" - yep, that does it for me!

                I have 5 inch side-pipes on the cobra, barely muffled, love that deep burble from the efi 347 windsor!

                Now, if only I could get something similar to that from the D4D.

                I guess I will have to wait for the missus to dissappear for a few days so I can instal a new exhaust. And we she says "What's that strange noise?" I can always go "Noise, what noise?"
                Dave
                Views expressed are mine alone and are not intended to compromise the integrity of my employer nor offend those who may read such views.
                Bugger Bali, get out and see Australia before we sell it all to China.

                Comment


                • #9
                  Re: 1kz chip facts

                  Here is a quote from the 4WD Custom Guide Feature Writer - Evan

                  Well after spending a day at Berrima Diesel with Scott and Andrew, all I can say is DP chips do work. Editor Earle and myself sat there and watched run after run on a few different vehicles, and each of them had a noticeable increase in power with the DP Chip installed.

                  In the upcoming issue of Custom guide (issue 26 out next month) we wrote an article called before and after DP Chip install. This was completely unbiased as both Earle and I were there, and we managed to find a local farmer who had a modified Holden Colorado with a DP chip fitted, and was willing to give his opinion.

                  Look out for issue #26 of Custom guide to see the dyno print outs and first hand opinions of the DP Chip.
                  Direct link to his post...
                  http://www.4wdaction.com.au/forum/showt ... ost1086001

                  I'm just about there in terms of going down this track. I drove a new Diesel pathfinder a few days ago & the whole trip including having to overtake a few semitrailers, I didn't use full throttle once! The power & torque of the Nissan is only marginal over what the 1ktze Prado would be with a chip. (Albeit a 5 speed auto whereas mine is just the 4 speed.....)

                  Cheers
                  Richard
                  2011 GXL TD Auto Prado Silver

                  Comment


                  • #10
                    Re: 1kz chip facts

                    After driving a friends 1KZ with DP chip and boost controller I went for it, chip improved off the mark performance and caravan towing ability, Ithen added a boost gauge (Digital unit from Supacheap) to see what was happening in that area, gauge indicated boost was only 8Psi, installed boost adjuster and set to 12Psi and headed for Newcastle up the Hume Hwy with 2 Tonne caravan in tow , dissapointed when speed fell tp 60km/h on long hills so I wound the boost back to 10Psi at Newcastle and the trip back was much better, holding 80Km/h on worst of hills, heaps of power holding 100Km/h on most sections no overheating probs I could hear the cooling fan cut in on long climbs. One thing I have noticed is that the Chip only operates off accelertor pedal not on criuse control. Fuel economy for first part of trip was 16lit/100km haven't refuelled from return trip yet.
                    Getaway Ray 2013 Silver GXL D4D Auto, Brash Imports Sat/Nav, Dual Batteries via Redarc DCBC 1220,Waeco 40Litre,Supreme Getaway Van, Albury/Wodonga 4WD Club Member.

                    Comment


                    • #11
                      Re: 1kz chip facts

                      Originally posted by getaway ray
                      One thing I have noticed is that the Chip only operates off accelertor pedal not on criuse control.
                      Yes I think a few of us suspected that the wire to the throttle did more than just act as a safety feature. It appears more to be a "requested load" input to the chip. Which is fair enough, it just means it only works when using the throttle.

                      There are two ways to look at this....

                      1st, when using the cruise control the vehicle will only be making as much power as the manufacturer recommends. If you require more power in cruise you can always put your foot on the throttle to assist - I assume the chip will see this & add power. With the chip not working with cruise it will assist in not aggravating the already severe behavior of the cruise control when cresting hills. It takes a while to realise that full throttle is no longer needed & you can gain 5-10km/h before it backs off - this would be worse with the power of the chip!

                      2nd, Unfortunately even empty & with some oversize tyres, there are still a few hills on the freeway that will slow you down below the speed limit. Loaded you are even more restricted. Without the power of the chip in cruise mode it will remove some benefit of the chip.

                      More food for thought!
                      Richard
                      2011 GXL TD Auto Prado Silver

                      Comment


                      • #12
                        Re: 1kz chip facts

                        Hi all, thought i'd throw my $2 in the hat.
                        I have a 05 TD vx and have a DP chip fitted. It has gone from 96kw to 127kw. I havent really noticed any increase in fuel consumption, and to confirm this i ran some tests on a trip from Adelaide to Darwin. With the chip plugged in and set on 5(factory) it has fantastic acceleration and seems to rev a lot more freely.
                        I have had the chip unplugged for the past 2 months due to other reasons and only plugged it back in yesterday...wow, spend the money!!!! the difference is incredible.
                        Do the research, and if your convinced buy a chip, for anyone in adelaide i am more than happy to let you take my car for a drive with the chip in to see for yourself.

                        Cheers
                        Jarrad

                        Comment


                        • #13
                          Re: 1kz chip facts

                          Yep I would have to agree that the chip is a good idea....& the DP Chip has plenty of safety margin. After reading the whole thread on 4wdaction (link above) it has satisfied me sufficiently to be happy with the idea. My Prado is @ 200,000 km & I want to keep it for a fair bit longer too!

                          Just have to sort the financial priorities but at least now its on the list
                          Richard
                          2011 GXL TD Auto Prado Silver

                          Comment


                          • #14
                            Re: 1kz chip facts

                            Hi All. For what it's worth I am on my 2nd Prado and 2nd chip. 2005 Diesel Auto fitted with DP about 10% better economy if you DONT use the extra power provided. 2008 Diesel Auto again about 8 or 10 % if you dont hit the gas pedal.The main reason I fitted them was for towing the difference is chalk and cheese.I purchased and had mine fitted by a Toyota dealer so figure they must be OK.If you have other mods ie exhaust,turbo boost or bigger intercooler then you do need to go to the experts for tuning of the DP.All up very happy.
                            Cheers. Bribiejohn

                            Comment


                            • #15
                              Re: 1kz chip facts

                              Hey guys!

                              Finally decided to bite the AUD$1428 bullet last week, and get a DP Chip fitted onto my Automatic 120 1KZ-TE, here in Manila.

                              All I can say is that baby brought a wide, evil grin to my face. :twisted:

                              According to the 4WD dyno, the '7' setting gave me an additional 20 whp. (Had some pre-Chip preps though, in the form of a manual boost controller dialled to 1.0 bar, drop-in Unifilter and 3" exhaust.) Thing is, the readout couldn't tell me my max power and torque, so I might go for another dyno run but on RWD only this time, just for reference, since I'm not on 4WD mode most of the time anyway.

                              Anyhow, even without the dyno figures, you could already feel the gains. In slow city driving, there was no need to do much flooring of the throttle. In open roads, it does shine more. Where I used to max out at 160 kph, it kept on giving some more, climbing to where the gauge ended, at 180 kph. Not bad despite being on heavy 20" rims. Hehe!

                              As to fuel economy, I can't say for sure yet. The tank is close to empty, but most of the driving was on highways. I'll check on the next tank when I'm mostly confined to city drives, just to find out if the fuel consumption changed.

                              No smoke was blowing. Well, initially, while it was on the dyno, there was some puffing. But I think you could say that was part of the 'italian tuneup' the tuner was doing. Afterwards, under full throttle, didn't have the same problem.

                              I think the other guys who've been on DPChip much longer can give a better account on the reliabilty aspect. I'm hoping this mod isn't doing anything disastrous to my motor.

                              Comment

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