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RX-7 3rd Gen Specific (1993-2002) RX-7 1993-2002 Discussion including performance modifications and Technical Support Sections. |
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#1 |
The boosted the better...
Join Date: Jan 2009
Location: Orlando, FL
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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.
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04 GT Yellow Mica RX-8-sold 93 SSM FD-sold 94 SSM FD-Sold |
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#2 |
RCC Contributor
Join Date: Mar 2008
Posts: 535
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You must list all your motor mods before that question can be answered . Intake ,exhast ,porting, computor ,modified twins,single ,on and on
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#3 |
The boosted the better...
Join Date: Jan 2009
Location: Orlando, FL
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Apexi intake, DP,MP, CB, PFC, SMIC...stock twins, no porting.
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04 GT Yellow Mica RX-8-sold 93 SSM FD-sold 94 SSM FD-Sold |
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#4 |
Founder/Administrator/Internet Pitbull :)
Join Date: Jan 2008
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No... Unless you have certain power range and boost.
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#5 |
Rotary Fanatic
Join Date: Feb 2008
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like mentioned above, how much power do you want?
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![]() '93 SSM Touring-S475... ![]() '87 Tii-LS1/T56 |
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#6 |
The boosted the better...
Join Date: Jan 2009
Location: Orlando, FL
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i'm hoping for the 400hp range....
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04 GT Yellow Mica RX-8-sold 93 SSM FD-sold 94 SSM FD-Sold |
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#7 |
Sua Sponte
Join Date: Feb 2008
Location: Killeen, TX
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to get in the 400hp range at the wheels you will def. need larger injectors than stock.
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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 |
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#8 |
Founder/Administrator/Internet Pitbull :)
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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).
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#9 |
Rotary Fanatic
Join Date: Mar 2008
Location: Rockville MD
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You would need some form of tunable ecu as well.
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#10 |
Rotary Fanatic
Join Date: Feb 2008
Location: B'ham, AL
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He said he had a PFC.
![]() Listen to what Herblenny said. 400rwhp with stock twins is possible but pushing the limits with them.
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1993 Rx-7 SM2 #11 At the local AutoX: http://www.youtube.com/watch?v=9VOSQkkSLQs Speed for Sale shootout 2007: http://www.youtube.com/watch?v=JiqlyAkGmpg A few laps at Barbers: http://www.youtube.com/watch?v=6_h5q...x=0&playnext=1 |
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#11 |
Rotary Fanatic
Join Date: Mar 2008
Location: Rockville MD
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Ha yea he did I read that post and completely skimmed over the PFC...
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