R32 Gts-t No Power At 14psi?

[rory_kieran]

I just installed a boost controller and I now it is running from the standard 7 to 14psi but it still doesn't hold boost and seems like it has alot more potential then showing. It goes ok to aout 4000 revs and then kind of dies instead of belting my head back to the seat. We put resistance on the air flow to the wastegate which helped a little and I have been told a fuel pump might be the problem. Has anyone got any recommendations on this?

*Moved to General Automotive from Tutorial/Howto by paulr33*

[Cubes]

Never raise boost without a dyno, especially if you haven't replaced the fuel pump with a new item.

Its just silly. You really dont want a hole in a piston.

[Jago]

if it's a stock turbo i'd turn down the boost a bit

[FAST-GT-R]

Turn the boost back to 11psi.

Otherwise no more turbo

[Cubes]

Fast-GT-R,

Nothing wrong with 14psi on the rb20det provinding its not running excessively rich/advanced or excessively lean/retarded.

Mine ran

[Cubes]

Fast-GT-R,

Nothing wrong with 14psi on the rb20det provinding its not running excessively rich/advanced or excessively lean/retarded.

Mine ran 15psi for 100,000km's, in total 170,000km's.

The turbo then ran 12psi for another 20,000km's where I pulled it off, upon inspection the turbo is still perfect, its a very tight turbo, well within specs.

High egt's is what kills the ceramic turbine wheel.

Edited December 21, 2005 by Cubes

[race_snooze]

rich and retrard my friend... search

[sky30]

My R32 hit factory boost cut at around 13-14 psi, it would usually cut out at around 4000rpm.

[Cubes]

race_snooze,

The R32's don't have rich and retard issues when running the stock or even a mild hks 2530 turbo.

The only time I experienced R&R was once the rb30det was dropped in, the stock ecu simply could not handle the extra airflow at low to mid rpm's,

The fuel cut with the stock rb20det turbo and ecu was around 16-17psion a normal 20+ degree day .

A cold morning or night it would cut in third at around 4500rpm on 14-15psi.

Edited December 21, 2005 by Cubes

[rory_kieran]

Thanks for all your help guys. I'm getting a walboro fuel pump for my car next week and a 3 inch exhaust through so that should be of some help. I'm also early next year putting the R33 turbo bolted on which should provide some relief. Should I get new pistons with my car running this and the 14psi or is it a waste of money?

[nemz]

you shouldnt need new pistons, take it to some one who knows what they are doing and get it tuned at 14/15 psi

[rory_kieran]

Thanks nemz. At least I wont waste any money on pistons not needed. After the exhaust, fuel pump and R33 turbo what should be my next step for more performance and is there any ball bearing turbos within reason price wise for this car that is bolt on without too much strain on the motor. If so where would you suggest getting it?

[Baz]

HKS 2530..... Is a good upgrade

[Josh]

Pretty much perfect upgrade..