.

[scarface]

.

Edited July 3, 2007 by scarface

[BAMR33]

Na, doesn't damage it too much (it will do damage if you just leaving it sitting on the limiter for ages). It happens because the rev limiter works by cutting fuel, which causes the afr's to momentarily lean out. The PFC reading only measures the maximum knock, average knock would be a much more useful reading here.

[scarface]

average knock is 10- 15, never goes above that no matter how hard i drive, this is the 1st time its been this high and i didn't sit on the limiter, only hit it and engine light flashed, got me all paranoid. but when i revvied to just before rev limiter a few times after knock was 10 - 15 the whole way to 7000rpm, i set rev limiter at 7200, so its never revved too hard. thing is i've hit rev limiter before and its never got that much knock before, thats why i got worried

Edited March 20, 2007 by scarface

[BAMR33]

It's acceptable, mine has reached the 80's too when accidentally hitting the rev-limiter. If you really want to fix it just get a Bee*R rev-limiter.

Was it hot day by any chance when this occurred?

[scarface]

nahh it was night time so it was pretty cool air, so what happened is pretty normal and nothin i shoould be worried about ? thanks for all the info too

[jazza08]

Even if the car did have a big detionation, its still running fine so i wouldn't be worried about it.

I had knock of 152 once... i think i got a stone in the engine bay hahahah

You only need to worry if knock is going above 40+ like everytime you drive, then you'd need the tune looked at, under 15 is very safe, tuned fairly softly

[scarface]

lol what a shit rev limiter power fc has if it makes ur car detonate when u hit it

[700HP-GTR33]

lol what a shit rev limiter power fc has if it makes ur car detonate when u hit it

I also believe this can be caused by AFM maxing out........this can also light up the engine light.

Need to check voltage at this point...

[paulr33]

if there is no fuel how can detonation occur

[2rismo]

lol what a shit rev limiter power fc has if it makes ur car detonate when u hit it

lol

No fuel - no detonation.