Another Boost PSI question - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

sr20tom · 03-22-2005, 03:13 PM

Its finaly warm out here in Jersey and i am planning to finaly go to the track and see if my car or my driving skills improved. (probably not). Last year i ran a 14.0 with a s13 Blacktop, Fidanza flywheel, ACT 6 puck, HKS BOV, TEIN HE's. 3" downpipe and a 3" Tanabe racing medalion with an Apex intake(pump gas). Now i got a FMIC and a Greddy Profec B II and dont know how many pounds to run. My fuel pump finaly took a dump and i put in a walboro 255. So with race gas, how wany pounds should i go up without blowing up???
Thanx
Tom
PS any one know good settings for the PROFEC B II?

silviapwr20 · 03-22-2005, 03:34 PM

I ran a 13.9 @ 101, 2.2 60ft w/ a setup almost identical to yours, 13psi on a
t-25

Silverbullet · 03-23-2005, 08:36 AM

if u want the max out of ur T25, run about 15-16psi. Thats just barely out of it's efficiency range.

wootwoot · 03-23-2005, 09:13 AM

But at that boost level you risk maxing injectors and MAF. Dont use racegas and set it to 12pounds.

420sx · 03-23-2005, 09:25 AM

thats why u run a fuel presure regulator or upgrade ur injectors dooooood

Yoshi · 03-23-2005, 11:20 AM

ya, I wouldn't go past 12, 15-16 is WAY too high.

03-22-2005, 03:13 PM	#1
sr20tom Leaky Injector Join Date: Dec 2004 Location: Queens Posts: 147 Trader Rating: (0) Feedback Score: 0 reviews	Another Boost PSI question Its finaly warm out here in Jersey and i am planning to finaly go to the track and see if my car or my driving skills improved. (probably not). Last year i ran a 14.0 with a s13 Blacktop, Fidanza flywheel, ACT 6 puck, HKS BOV, TEIN HE's. 3" downpipe and a 3" Tanabe racing medalion with an Apex intake(pump gas). Now i got a FMIC and a Greddy Profec B II and dont know how many pounds to run. My fuel pump finaly took a dump and i put in a walboro 255. So with race gas, how wany pounds should i go up without blowing up??? Thanx Tom PS any one know good settings for the PROFEC B II?

03-22-2005, 03:34 PM	#2
silviapwr20 Leaky Injector Join Date: Mar 2005 Location: melbourne,fl Posts: 86 Trader Rating: (3) Feedback Score: 3 reviews	I ran a 13.9 @ 101, 2.2 60ft w/ a setup almost identical to yours, 13psi on a t-25 __________________ 96 240sx SR'd 343RWHP/317RWTQ S13/S14 SR Wiring Services Available

03-23-2005, 09:25 AM	#5
420sx Post Whore! Join Date: Jun 2004 Location: Texas Age: 42 Posts: 3,960 Trader Rating: (0) Rides Gallery: 420sx Feedback Score: 0 reviews	thats why u run a fuel presure regulator or upgrade ur injectors dooooood __________________ hydropgrahics! ls1......

03-23-2005, 11:20 AM	#6
Yoshi Post Whore! Join Date: Jul 2001 Location: Washington Age: 48 Posts: 3,003 Trader Rating: (1) Rides Gallery: Yoshi Feedback Score: 1 reviews	ya, I wouldn't go past 12, 15-16 is WAY too high. __________________ www.360realms.com/S13-S15

03-23-2005, 09:13 AM	#4
wootwoot Post Whore! Join Date: Jan 2004 Location: sarasota florida biatch Age: 39 Posts: 3,850 Trader Rating: (0) Feedback Score: 0 reviews	But at that boost level you risk maxing injectors and MAF. Dont use racegas and set it to 12pounds.