rb25det issue

[bvr463]

i was wondering if anyone out there could help me, heres my issue, when i floor gas pedal to ground from a dead stop car bogs and then slowly picks up, but if i creep out of gear slowly and then pound it at about 2800 rpms the car boogies. Or if im like in third and then down shift to second the car is animal... can anyone give me some pointers, brand new spark plugs, coils, timing belt, i tink timing is correct... IDK i'll take any pointers,suggestions, etc...

[omgRWDgoodness!]

Interested in finding a solution, too. I'm having a similar problem except my RB feels like it lacks power throughout (hence my signature) and bogs when cold pulling out of a parking lot in first gear and somewhat until it warms up.

[Sileighty_85]

what plugs and gap?

have you checked the ECU for codes?

[bvr463]

funny i tried pulling codes and my ecu has the option, but no more blinky blinky lights
i have ngk bkr7e i think they are at .28

i seriously think my timing and wiring of motor is off

[godzillarb]

Maybe... learn to drive a turbo car? If you start off at 1k from a stop it's not going to be fast because these engines don't exactly have all the torque in the world.

Other than that, you might be too lean or too rich in those lower RPMs. What are your a/fs?

[ch1873857]

had this problem before.

boost leak

test it.

[seeks14]

boost leak ,..
you could also be running to lean..
check injectors or fuel pump make sure u have enough pressure in ur fuel system and PLEASE do your self a favor!! buy a wideband n see ur A/F ratios..

[bvr463]

i have a innovative wideband, i will check for boost leaks this week end. As far as wideband numbers what would be a good number range for the low end?

thank you for the help

[User_Name]

Check your fuel pressure as well. Also, it's a good idea to change the fuel pump, fuel filter, and fuel pressure regulator as well.

[bvr463]

i changed the pump to walbro 255, fuel filter, but not the fpr..

[bvr463]

what is the proper fuel pressure on the gauge suppose to read

[Phatsilvia]

My friend has an rb25 and his car was doing the same thing plugs need to be gaped to .8
and also He had 2 bad injectors try testing them or swapping with a friend

[redline racer510]

The fuel pressure should be 40psi +/-3 psi at idle after properly warmed up engine.

[bvr463]

thank you peoples, for all your info :)

[ch1873857]

yes plug gap is crucial. my rb25 made a TON more power when i closed the plug gap. google it bc i cant remember exactly i know i closed those bitches pretty tight. by a ton more power i mean it stopped breaking up under boost haha.

walbro and no fpr and no gauge is a huge no no. all my buddies wondered why my car ran so much better and this was why. they didnt believe me until they did it themselves. also crucial.

good luck.