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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

Posted
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

Posted
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.

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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