Outer Limits 4x4 Board

hi all,
I have a 03 hilux sr5, 3lt turbo desiel. Was considering putting a boost gauge on and increasing the boost. Also considering putting a 2.5 inch exhaust on as well. Any thoughts on increasing the boost, has anyone done it and was it worth while. I cant think of any reason not to do it but lots of reason why i should. If any one has done it what boost are you running with and has it caused any problems. Any input would be appreciated.

Thanks[/quote]

Do the exhaust first before the boost.
Make sure the new pipe goes from the back of the turbo.
A good exhaust shop will take off the turbo backing plate and
machine the exit to suit the new exhaust diameter,not just weld it on the back.

There should be a slight increase in boost because of the new flowing exhaust.
Mine factory was running 12Psi .
I up the boost but found at 15psi there is a boost cut and the fuel is
taken out drove shocking.
Without tricking the computer I adjusted it to make 14psi max and all OK.
I don't think the extra 2 psi made a huge difference but the boost controller made the turbo spool up quicker so it was better drive feeling.

The really bad thing is trying to conect the boost controller,have a look at where the turbo is on the Hilux , It's a pain and all bad with heaps of swearing and skin of the fingers.

If funds permit get a Tunit unit to adjust the computer and fix the fuel curve.That's my next step in the engine side of things.(funds permitting)


Good Luck

Dazza

Thanks for that. I am going to check out a few exhaust shops tomorrow and see what can be done. I do know that the dirty big muffer has to go so it can breath better. One of those tunits would be great but the dollars will be a problem. I just wonder how much better they actually make the truck go. The web site did not say too much. Has anyone fitted one. Do they work and are they worth the money. Need to be able to justify it to the handbrake.

Thanks

i have been thinking of getting a computer and intercooler of a imported surf with the 3lt td enginge and fitting it to my hilux, depending if it was all compatible

mates got a 3lt lux with the d-tronic chip, goooooooooooooo;s like a shower of shit , no really it hauls arse big time from high way to wheeling, only thing hold it back for the moment ifs, but that will be sorted im told in a little while!

the local arb place fitted one to a hilux and took it out for a run, a hill a bit out of town that you can hold your 100km on they put the boot into it at the bottom while doing 100kmh and at the top were pulling about 140kmh

the local arb place fitted one to a hilux and took it out for a run, a hill a bit out of town that you can hold your 100km on they put the boot into it at the bottom while doing 100kmh and at the top were pulling about 140kmh