Detonation: Do I have it or not?
#1
Junior Member
Thread Starter
Join Date: Jan 2007
Location: Philadelphia, Pa
Posts: 136
Total Cats: 0
Detonation: Do I have it or not?
Hey guys, let me start off by saying merry christmas! Now to my question: Today I took the car out for a nice drive it was very cool outside and my intercooler pipes were not even hot, infact they were extremely cool. I did a bunch of runs and when I was goin flat out in 4th gear I would get some sort of noise between 5,000- to redline. It only happens in fourth gear fifth gear no noise nothing. Now my down pipe does rattle sometimes so I think that is what is making the noise, but I feel that the noise could be detonation what do you guys think? Owe this might help: 8psi, frontmount, stock ecu, 330cc inj., td04-15gHL
#7
Junior Member
Thread Starter
Join Date: Jan 2007
Location: Philadelphia, Pa
Posts: 136
Total Cats: 0
I have a 99 so unfortunately I can not tell by the gauge as for ignition management I have none because I never noticed any detonation and wanted to keep stock timing. Also, what should I look for on the plug that would indicate detonation?
#11
http://www.verrill.com/moto/sellingg...colorchart.htm or
http://www.centuryperformance.com/spark2.asp
Look at the overheated, preignition, and the detonation plugs.
Do you have any form of air/fuel or wideband gauge on the car? Maybe your running lean as well. I have a '94 with the 'real' oil gauge and I've had detonation and never noticed the gauge moving. You can try retarding your timing a few more degrees and see if that helps eliminate the noise your hearing. If it's detonation it should get quieter or stop. What are you using for ignition management?