sillysi

I have a P1 and always run it on Optimax & 100ml of NF Race Formula per tank of fuel. At I recent track day I noticed the knocklink hit red twice during the day. This was under heavy acceleration just after changing gear. Could the red lights be attributed to engine/road noise or is it something more sinister? On day to day road use I have never seen amber or red before. One thing to note in the afternoon I topped up with 20ltrs of Optimax with Millers octane booster in and the knocklink was much more active than in the moring session when I was purely on Optimax & NF Race Formula. The car is standard expect for a Prodrive backbox.

Si.

[Edited by sillysi - 11/30/2003 11:29:07 AM]

john banks

Check the MAF sensor is OK, check the boost is not spiking too high on track, other than that sounds like you probably had a bit of transitional det, and should use the octane booster that made the car run best - ie the NF, and use a bit more on trackdays. Half a bottle of NF race to a tank of fuel should be about right.

sillysi

John,

Thanks for the reply, sorry to sound thick but what do you mean by "transitional det"?

Si.

john banks

Gearchange det. It is said by some not to be too harmful. I still don't like it there.

sillysi

Ok, thanks.