power upgrade tdi 4.2 patrol

Hi Maurie

Had my turbo upgraded and 3" exhaust fitted all at once at United Fuel Injection in Redcliffe (out near the domestic airport) in Perth. Made a big difference to the way it drives. Hard to tell if the economy improved, but I'm sure it has just no hard proof.

I found it worthwhile!

Crayman1 this might sound silly but try driving another 4.2 with 3" exhaust, it
maybe your engine. or your pump needs twigging

Soooo, i take it that the venerable 4.2 may not have quite as much poke as most people would like??????
I ask as we are looking at a new one and are wondering about economy and power from the 4.2 v's the 3L.

meow.

rick.

Maurie, you have an intercooled one as I have and reading what I can I believe the pump has some electronic monitoring of fuel useage for emissions purposes and not sure who is best equipped to handle it. The older pumps were relatively easy to trick up. The intercooler I believe doen't do a lot in comparison to that should be expected and some have said suits the purposes of emissions rather than anything else. Advancing the pump was easy too and really positive.

I guess when you talk about drop pipe, you mean the dump pipe?

Gday guys
A friend of mine just bought an 03 model, and took the safari kit of his old gq and on the gu it went, he found a butterfly valve just before the intercooler, and wasnt sure what it would be, i suggested it might work with the EGR...but anyway, back to the point...he noticed a difference in lag time, but more midrange to high range power with the safari, the factory turbo is too small and ive heard it can overheat the motor from being too much of a restriction to getting heat out the engine if used at high speed.
So that is an option (safari turbo)that i would consider along with the others...
Andrew

Well...i recon you should do some homework before you fork out the big dollars.
Personally, I would look into the gas setup. It really does look good on paper. For the amount of dollars you will pay to geta little better power from ur 4.2 by fitting a bigger turbo, I would test drive one that has the gas fitted.

I am seriously considering adding the gas to mine. From what ive read, its around 20% power increase. 20% increase is not an easy thing to get out of a 4.2 with turbo fitted. For the cost of around 3500 bucks, considering the NSW gov will refund me 2000 for fitting gas, i can get approx 20% power increase for around 1500 bucks. Thast pretty cheap. Not to mention the cleaner burn i get which in turn will keep oil cleaner too. It all adds up to cleaner engine and that in itself is a bonus if you intend to keep ur 4b fora long time.

My GQ runs a denco turbo, I run mine with a 7 pound boost ONLY, It works fine for me, but id like to try it at 10 pounds boost before i decide to purchase the gas setup. I will be road testing one before i decide if its worth it. But from what i have read, It sure sounds good.

So think hard before you spend ur money, the idea of adding a "bigger" turbo sounds good, but it wont improve ur car as much as you may think it will.

Ange

Speak to MTQ... they have a good option from speaking with John and Miles the other night.