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Running Lean Full Throttle

jiri styles

By jiri styles,
in Engines & Forced Induction

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jiri styles Enthusiast

jiri styles

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Posted

just got my rb25 tuned the other day with the td06sl2 10cm, greddy copy, 440cc injectors, aftermarket throttle body, custom low mount steampipe manifold, full 3 inch exhaust, bosch 040 fuel pump.


Car made 268 hp on 15 psi and it started to lean out on full throttle.. and this is my problem now D:


tuner said tps could be and issue wiring wise, could bereading backwards or opposite or something..


mabey faulty fuel pressure reg? im running a sard fpr but i think it was faulty from the start so i am changing this, thoughts anyone?

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scotty nm35 Grand Master

scotty nm35

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Posted

So you are running the 040? I have heard the mesh filter on the bottom blocks up restricting flow, I think some have cut the mesh out.

Definitely run a direct 12V feed from the battery through a fuse and relay, using thick wire as GTSBoy mentioned. There is a how to in the DIY section.

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jiri styles Enthusiast

jiri styles

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Posted (edited)

yep he also said to do the fuel pump thing as you guys are saying so i am going to start with that first :) because atm its just wired to the original pos and neg wires in the fuel tank and thats where im going wrong i think ..

Edited by jiri styles
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