fuel problem, help pls

[HondaCivicEx98]

after putting back my 2.5 short intake back(over stock) and fixed my exhaust resonator crack, my fuel/air gauge starts to read stoich most of the time and when at full throttle about 5000 rpm it starts to go to stoich again. I have never had this problem before until tonite i pushed the car. Can anyone help me out what is making it run stoich after these changes i did. And my boost reads 0.5-1psi less. Is it suppose to be like that? The car pulls better at lower RPM but is less strong at higher rpm, help pls

[Holden]

It sounds like the intake is a real improvement and is supplying more air to the engine. This could be leaning it out.

Add more fuel and see what happens.

------------------
Greg Holden
96 GSR, JSRC @6psi, AEM CAI/RSR 4-2-1/Greddy PE, Cartech 20005/Walbro GSS-342/TPS Mod, JR BTC, KYB AGX/H&R OE Sport/ST 19mm Rear Swaybar
Best 1/4 ==> 13.937 @ 101.41mph
My JRSC Install Site

[Turismo]

Might try resetting the ECU also.
It may have "learned" your old setup.

Worth a shot.

If you messed with the exhaust did you work around the O2 sensor(s)? Seems like the next place to check for a problem.

[HondaCivicEx98]

thanks for the advice.
i dont think the O2 sesnor is bad.
but i do notice a litle punch after fixing the craked resonator.
Psi seems to be about .5-1 psi lower. Is this normal or at least a good sing?
thanks

[Holden]

That small of a boost change could be just weather. It doesn't make sense with what you did.

Greg