Ok so a week ago I rode with a 750 until night fall.
He had a full yoshi exhaust and a custom tune.
When ever he let off the throttle it would shoot flames (sounds like bullets going off in your chest). SHARP blue flame that is shaped like a sharp cone 7 inches out the exhaust tip and isnt really like a flame thrower, but more of a sharp, quick, cone.
He said it happened when he put the full exhaust on, even before the tune, and that the same thing happened with another 750 he had. I saw his dyno graph and it was pretty much perfect air fuel ratio so I know he isnt running rich.
I have a 05 gsxr 600 with a full yoshi and pc3 (and lots more). I am about to get it custom tuned when i change out my CCT but my question is... Will I be spitting blue flames like that? why did both of those do it and not mine?
I got a little flame last night when i took it up to 11k and chopped the throttle, little blow back but nothing crazy like his. He could do it even at low rpms...
Anyone have the blue flames on their 600? what did you do? did a tune make a difference?
P.s. I'm not getting a tune just for flames... Im actually going to track the bike out haha (one track day got me hooked). and its about that time to tune it (running strong at 22k miles)
Came out of retirement to "catch" for a bunch of 20-24 year old men!
Join Date: Dec 2008
Location: North Jersey
Motorcycle: 2004 GSXR 600
Posts: 8,033
Re: Can a 600 Spit Blue Flames?
The blue flame is unburnt fuel in the exhaust. Some is normal but what you described about your friends bike doesn't sound right. Regardless of what his dyno says those are symptoms of running rich. Perhaps he needs it mapped again.
The blue flame is unburnt fuel in the exhaust. Some is normal but what you described about your friends bike doesn't sound right. Regardless of what his dyno says those are symptoms of running rich. Perhaps he needs it mapped again.
But the dyno showed Fuel/air ratio and he had the perfect 13.1 or whatever that ratio is from 6k rpm to red line. (the lines on the graph overlapped) So why would it be rich? . What I don't get is he said it even did that with his other 750 AND even before his tune on this one??? You think its a 750 thing, or maybe it's because his spark plugs suck don't burn hot enough?
He noticed remarkable power difference after the tune. He could roll on the gas and pic the front tire up @ 7k rpm with him leaning on the tank.. said it didn't have that power before the tune.
Came out of retirement to "catch" for a bunch of 20-24 year old men!
Join Date: Dec 2008
Location: North Jersey
Motorcycle: 2004 GSXR 600
Posts: 8,033
Re: Can a 600 Spit Blue Flames?
Quote:
Originally Posted by jmansour
But the dyno showed Fuel/air ratio and he had the perfect 13.1 or whatever that ratio is from 6k rpm to red line. (the lines on the graph overlapped) So why would it be rich? . What I don't get is he said it even did that with his other 750 AND even before his tune on this one??? You think its a 750 thing, or maybe it's because his spark plugs suck don't burn hot enough?
He noticed remarkable power difference after the tune. He could roll on the gas and pic the front tire up @ 7k rpm with him leaning on the tank.. said it didn't have that power before the tune.
I don't have an explanation. I can only comment on what the symptoms you're describing.
I want to see where this is going... I have a 750 that's not spitting any flames at least that I'm aware of...
Then your shit is definitely weak bro....the blue flames will match the blue L.E.D's and the sluts will surely flock to thou at Starbucks...trust me,I know
Then your shit is definitely weak bro....the blue flames will match the blue L.E.D's and the sluts will surely flock to thou at Starbucks...trust me,I know
Then your shit is definitely weak bro....the blue flames will match the blue L.E.D's and the sluts will surely flock to thou at Starbucks...trust me,I know
13.1 is NOT a perfect a/f ratio (iirc, thats a tad on the lean side, which is what i tuned my bik at with my bazzaz zafm). and NO a/f ratio's go straight across a dyno graph. there are subtle peaks and valleys.
and its about that time to tune it (running strong at 22k miles)
. What I don't get is he said it even did that with his other 750 AND even before his tune on this one??? You think its a 750 thing, or maybe it's because his spark plugs suck don't burn hot enough?
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