So i finally hammered it..
12-12-2007, 07:41 PM
#12
1st Gear Member
Join Date: Nov 2007
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Posts: 50
RE: So i finally hammered it..
ORIGINAL: 06Saleen3V
Sometimes when running that much higher octane gas than the tune is set for is bad for the car. The gas is not able to burn quick enough and can cause detonation
Sometimes when running that much higher octane gas than the tune is set for is bad for the car. The gas is not able to burn quick enough and can cause detonation
Detonation is AKA PRE-IGNITION, SPARK KNOCK etc...
Higher octane rating gas burns slowerthan low octane, I'm not sure how slower burning fuel can cause pre-ignition, detonation, spark knock.
Please enlighten me...
12-12-2007, 07:43 PM
#13
Retired Mod
Join Date: Jan 2007
Location: Long Island, NY
Posts: 7,658
RE: So i finally hammered it..
ORIGINAL: iwannagofast
Thats not true at all.
ORIGINAL: 06Saleen3V
Sometimes when running that much higher octane gas than the tune is set for is bad for the car. The gas is not able to burn quick enough and can cause detonation
Sometimes when running that much higher octane gas than the tune is set for is bad for the car. The gas is not able to burn quick enough and can cause detonation
+1
12-13-2007, 01:34 AM
#16
3rd Gear Member
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Join Date: Nov 2003
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Posts: 585
RE: So i finally hammered it..
Well I'm using the 95 grade with the 91 tune to prevent anychance of detonation but since i'm no expert I thought what 06Saleen3Vhave said maybe correct. Anyhow, is it really possible the knock sensors or spark plugs could be the reason? I mean I still have very low mileage, I was thinking of another possibility, dirty fuel injectors? you know fuel lean causes detonation...
3v4.6lI've driven twice on the highway and it's fine, it turns 2600rpmsdoing about 70, 2000rpms at 55.
BTW the car is brutal now!! I cannot imagine what it'll do with F/I (and traction)
3v4.6lI've driven twice on the highway and it's fine, it turns 2600rpmsdoing about 70, 2000rpms at 55.
BTW the car is brutal now!! I cannot imagine what it'll do with F/I (and traction)
12-13-2007, 02:03 AM
#17
6th Gear Member
Join Date: Apr 2007
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RE: So i finally hammered it..
Apologies guys. I was actually on another thread on a different forum and I got turned around a little (not my excuse for being wrong though). The point I was trying to make was that I know the 95 octane would be burning quite a bit slower than the 91. I thought maybe this would cause malfunctionduringcombustionprocess (spark and timing off?)I would think.Detonation was definitely the wrong word. Again apologies gents [&o]
12-13-2007, 07:33 AM
#19
3rd Gear Member
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Join Date: Nov 2003
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Posts: 585
RE: So i finally hammered it..
ORIGINAL: JB_Sonic_197
It sounds like you have a bad tune, too much timming?
It sounds like you have a bad tune, too much timming?
1) Spark Plugs
2) Clogged injectors
3) Knock sensors?
I'll take it to the dealer to find out.
My thanks to 06Saleen3V and all of you for your help.
