Hey fellas,

I've got an 04 BA XR6T capa flashed to 9psi (religiously running 98 octane) with airhog pod and centre muffler removed. After these mods the dam thing flies alright - but we always want that bit more!

Its going in tomorrow night to my mates workshop and he plans on upping the boost manually. How far can we go without running into problems? Bigger injectors are on the cards in the future along with a bigger intercooler and prob fuel pump- but before these mods are kicked into life - how much boost can I run safely?

According to FORD 6psi

Edited January 14, 200818 yr by velociTy

If you are using a manual boost controller I would be extremely careful. Im not down with the tuning side of life but I have a feeling the amount you can change depends on the the boost loop cycle used in your tune. In short, don't be silly used the electronic controls, capa hardware and tuning software to alter boost (I.e. custom tune). Not being harsh, just suggesting you play it safe :-)

Yea I am worried about it but my mate ( the diesel mechanic ) thinks it should be fine and the computer will compensate for timing etc. Cant really afford for anything to go wrong hence my post!

Maybe bumping to around 11 or 12psi max???

Yes diesel mechanic! lol

Thanks for the advice IH8TOADS

how exactly is he going to raise the boost

I wouldn't play to much without a dyno to get afr readings etc

Standard injector will struggle top end with boost pressures at 10PSI or higher. Moreover, the car has been programmed to supply a certain amount of fuel, which is a match for the commanded boost pressure. Increasing the boost will no automatically increase the fuel and (unless your car is running VERY rich) you will lean out.

I would strongly recommend NOT to play with the boost without adequate diagnostic equipment to review the effects of any changes.

I got no idea how he plans to do it - he does it to trucks everyday - but I'm too nervous to damage my baby now!

If anything "might" tweak up 9.5-10psi

Thanks alot guys

Just make sure you've got the video camera rolling

These things can't be tuned with a screwdriver!

have it tuned properly or not at all