S1 Rb25 Weird Problem

[Kris..]

dude, first just change the plugs.. and put 7's in it.. don't bother with 6's.

will do today after work

[Josh080691]

I'm having trouble with m s1 rb25 also..drives fine, idles fine new oil, plugs etc etc

Specs as follow.

Hks super dragger

Apexi pfc

Pod filter (3A racing pod)

Split fires

Decat (standard cat modified)

Fmic

Running 0.7 bar

Bcpr7es gapped to 0.8

Runs fine until I go to give it some feels really sluggish and sometimes feels like it shudders

Been like this for a while I can't find the source.

Any help would be appreciated.

[Dose Pipe Sutututu]

do you have a wideband on it?

sometimes too much throttle pump set on the PowerFC will make it doughy when you go to give it some.

[tranman]

Definitely sounds like a misfire issue in any case. Test from the sparkplug back e.g. spark plug, coilpack, coil loom, ECU.

1. Coilpacks are the biggest culprit. Have the workshop test them. Check they aren't failing under load conditions. Sometimes reducing the spark plug gap can simply end-up masking these symptoms.

2. Other electronics governing air/fuel including Faulty AFM, Throttle Position Sensor etc.

[Josh080691]

My problem happened even with the stock ecu might need to have it looked over