Injector upgrade

somchhir1 · 01-12-2009, 06:35 PM

I wanted to know if it was necessary to upgrade the fuel injectors after installing a new fuel pump? For instance a Walbro 255 pump.

Garfinkles Motor Works · 01-12-2009, 06:42 PM

You must list all your motor mods before that question can be answered . Intake ,exhast ,porting, computor ,modified twins,single ,on and on

somchhir1 · 01-12-2009, 06:46 PM

Quote:

Originally Posted by Garfinkles Motor Works

You must list all your motor mods before that question can be answered . Intake ,exhast ,porting, computor ,modified twins,single ,on and on

Apexi intake, DP,MP, CB, PFC, SMIC...stock twins, no porting.

***Herblenny*** · 01-12-2009, 08:17 PM

No... Unless you have certain power range and boost.

dregg100 · 01-13-2009, 12:35 AM

like mentioned above, how much power do you want?

somchhir1 · 01-13-2009, 11:23 AM

Quote:

Originally Posted by dregg100

like mentioned above, how much power do you want?

i'm hoping for the 400hp range....

Brent · 01-13-2009, 11:53 AM

to get in the 400hp range at the wheels you will def. need larger injectors than stock.

***Herblenny*** · 01-13-2009, 12:14 PM

400 RWHP stock turbos?? 400 at the engine is about 320-350 @ the wheel. At low to mid 300s, you might be ok with stock injectors but recommend to go bigger..

400 RWHP, I say its not good to try with stock twins. You could go with BNR stage 3 (BNR is local) or go single. But not with stock turbos.. Also, you would need a good tune when you get injectors swapped.. Good thing if you get this done within few weeks.. as Ray from PFS is coming down for a tuning day (huntsville, cost anywhere from $400-800 pending dyno time).

I have some 1300s for sale or you could go 4 x 850s (I have 850s also).

RXtacy · 01-13-2009, 01:26 PM

You would need some form of tunable ecu as well.

SPICcnmFD · 01-13-2009, 01:37 PM

Quote:

Originally Posted by RXtacy

You would need some form of tunable ecu as well.

He said he had a PFC.

Listen to what Herblenny said. 400rwhp with stock twins is possible but pushing the limits with them.

RXtacy · 01-14-2009, 07:37 AM

Ha yea he did I read that post and completely skimmed over the PFC...

01-12-2009, 06:35 PM	#1
somchhir1 The boosted the better... Join Date: Jan 2009 Location: Orlando, FL Posts: 130 Rep Power: 17	Injector upgrade I wanted to know if it was necessary to upgrade the fuel injectors after installing a new fuel pump? For instance a Walbro 255 pump. __________________ 04 GT Yellow Mica RX-8-sold 93 SSM FD-sold 94 SSM FD-Sold

01-12-2009, 08:17 PM	#4
*Herblenny* Founder/Administrator/Internet Pitbull :) Join Date: Jan 2008 Posts: 644 Rep Power: 10	No... Unless you have certain power range and boost. __________________ DGRR 2013 - Year of 13B www.DealsGapRotaryRally.com http://www.facebook.com/Herblenny

01-13-2009, 12:35 AM	#5
dregg100 Rotary Fanatic Join Date: Feb 2008 Posts: 432 Rep Power: 18	like mentioned above, how much power do you want? __________________ '93 SSM Touring-S475... '87 Tii-LS1/T56

01-13-2009, 11:53 AM	#7
Brent Sua Sponte Join Date: Feb 2008 Location: Killeen, TX Posts: 839 Rep Power: 18	to get in the 400hp range at the wheels you will def. need larger injectors than stock. __________________ Road Atlanta August 2011 NASA TT 1:33 http://www.youtube.com/watch?v=IFY00PAK_Ps Traqmate's video of my car from the 2011 UTCC at VIR http://www.youtube.com/watch?v=2Zcn6...layer_embedded Video of Yellow LS1 FD at NASA TT at VIR http://www.youtube.com/watch?v=e6k0lJkcwrM

01-13-2009, 12:14 PM	#8
*Herblenny* Founder/Administrator/Internet Pitbull :) Join Date: Jan 2008 Posts: 644 Rep Power: 10	400 RWHP stock turbos?? 400 at the engine is about 320-350 @ the wheel. At low to mid 300s, you might be ok with stock injectors but recommend to go bigger.. 400 RWHP, I say its not good to try with stock twins. You could go with BNR stage 3 (BNR is local) or go single. But not with stock turbos.. Also, you would need a good tune when you get injectors swapped.. Good thing if you get this done within few weeks.. as Ray from PFS is coming down for a tuning day (huntsville, cost anywhere from $400-800 pending dyno time). I have some 1300s for sale or you could go 4 x 850s (I have 850s also). __________________ DGRR 2013 - Year of 13B www.DealsGapRotaryRally.com http://www.facebook.com/Herblenny

01-12-2009, 06:42 PM	#2
Garfinkles Motor Works RCC Contributor Join Date: Mar 2008 Posts: 535 Rep Power: 18	You must list all your motor mods before that question can be answered . Intake ,exhast ,porting, computor ,modified twins,single ,on and on