Why power peaked at 5,700 w/FM-13
10-25-2006, 03:51 PM
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Why power peaked at 5,700 w/FM-13 Well I am looking a little more into the reason my car peaked so quick on the dyno.
I was thinking it was because of the LS1 intake starving a bit for air .
Also a few times at the top of the RPM range I get a p0103 MAF high frequncy . I will be changing the MAF tommaorw and the the connection seems good .A few people had mentioned that it may be a tooth off . I am very attenteive when I do this so I am don't think it is off but maybey my eyes weren't working right that day .
Any ideas or is it normal
Mod list is
01 Heads Ti retaners Duel springs hardend rods
FM-13 cam
SLP LT
LS6 ported oil pump
LS2 chain
SLP lid
180 t-stat
Thats it
I was thinking it was because of the LS1 intake starving a bit for air .
Also a few times at the top of the RPM range I get a p0103 MAF high frequncy . I will be changing the MAF tommaorw and the the connection seems good .A few people had mentioned that it may be a tooth off . I am very attenteive when I do this so I am don't think it is off but maybey my eyes weren't working right that day .
Any ideas or is it normal
Mod list is
01 Heads Ti retaners Duel springs hardend rods
FM-13 cam
SLP LT
LS6 ported oil pump
LS2 chain
SLP lid
180 t-stat
Thats it
10-26-2006, 09:46 AM
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I disagree, plenty of people peak higher than that with an F13 and just about every other cam. I think the intake is whats holding you back, what LSA and ICL for the FM13?
10-26-2006, 09:53 AM
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Originally Posted by black_z
I disagree, plenty of people peak higher than that with an F13 and just about every other cam. I think the intake is whats holding you back, what LSA and ICL for the FM13?
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10-26-2006, 07:35 PM
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With your mods, you're not pulling enough air to cause high MAF error, so that is an issue. Is it clean? You don't show the A/F on the graph, were timing and A/F optimized while it was on the dyno? Do you have cats? was COT turned off?
The torque curve is very flat and wide. SLP L-T contribute a bit to that and possibly the cam has too much advance.
The torque curve is very flat and wide. SLP L-T contribute a bit to that and possibly the cam has too much advance.
10-26-2006, 10:18 PM
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has the car been tuned? I have an f13 on 111lsa+1. It peaked at around 6300-6400 and pulls hard to 6800. It made 396/372. But i do have the LS6 intake. other mods were Lt's, borla cat back, Lid, Tuned. I think yours should be peaking atleast as high as mine unless it was ground on a real low lsa which i doubt.