Limp Mode Due To Rich And Retard ?

[Dan_J]

so went to the recent calder drift day and car starts to go into limp mode while in 2nd gear after a few slides, doesnt want to rev over 3k, feels low on power like a intercooler hose is loose then it may eventually stall, weak idle etc. i retarded cas timing a tad which made the car last longer before it went into limp mode

i've got t-bolts all round so can't be an air leak, have done a quick once over.

2 months ago broke the old rb20 due to the intake pipe splitting( sucking in air from the split that the afm couldn't calculate) and overheating so i fitted another one which seems to be abit more fresh/ higher comp.

i'm thinking the ECU is going into rich and retard causing limp mode due to the fresher engine where as the old engine had no problems when sliding 2nd. the only thing that i cant quite put my finger on is the fact that it isn't an instant limp mode reaction, its after a while which i'd say is the intake temps getting hotter leaning out the engine therefor limp mode?

thoughts?

would it be safe to just retard cas timing more and continue sliding untill i get it tuned?

rb20det

hyper SS1 at 14 psi ( getting RnR at 5+ k in 3rd gear and above)

fmic

plugs gaped to 0,8

3" turbo back

thanks

[Moodles2]

Turn the boost down (retarding the timing you will just lose power anyway) or get a tune. Is it a R32 ECU? I've read someone on here say that only R33 and beyond ECUs have R&R

[DVS JEZ]

U need a tune, or atleast get it checked, u may be leaning out extremely hard with that turbo.

It may also be the afm. Try another known working one

[Dan_J]

will try out the spare afm, then mod the stock actuator to fit the turbo .

cheers

[mad082]

rich and retard won't cause the car to go into limp mode. from what i'm aware the rb20 doesn't even have rich and retard in the same way as the r33 does. i'd say that your problem (both your R&R and limp mode) is more likely caused by a dodgy afm. but as above, you may be leaning out with that turbo on the stock ecu, which may actually be what your R&R is. first thing to do would be to put it on a dyno and check it's still all good.

[Dan_J]

was the afm, went for a test drive with the spare installed and no longer getting what feels like RnR

[DVS JEZ]

was the afm, went for a test drive with the spare installed and no longer getting what feels like RnR

Excellent mate