F13 installed, but got a question regarding #s
My numbers were 398hp and 382tq with the F13, highflow cats, long tubes, ls6 intake, gtp heads, and a 6spd. The torque curve sucks and I've dropped a least 1/2 a second in the quarter. I made more power with my lpe stealth cam and mac headers.
Originally Posted by gomer
With stock heads, 12 bolt, and all bolt ons with the F15 cam, I did 397rwhp 36x rwtq. I think with the F13 and your drivetrain you should be 420rwhp atleast with a good set of heads.
Your cats and high heat/humidity that day aren't helping but not to the tune of 20-30 rwhp(which as stated should have been SAE corrected).
Where is the # peaking on the graph?
Any phugly dips/spikes?
Where's A/F?
Where's timing?
TB blade going 100% @ WOT???????
Was this a mustang dyno per chance? If it was a dynojet, there's probably something wrong. My guess is the tune. I can tell you i feel a huge difference between when ive got my air:fuel correct and when its a little big off, definately enough to give you the discrepency youre talking about. Did they tune for max power or did they just tune to get your wideband at a certain ratio? If they didnt put the sniffer far enough the tailpipe or if you have exhaust leaks you could have oxygen coming in from the outside, which means if they tuned you for say 12.8, you might actually be richer, killing your power. Ive seen a lot of people reporting all sorts of wacked out a:f readings on dynos, one guy had like 15:1 and no KR. That tells me that there was a problem with his wideband. Can you post a graph with your air fuel ratio?
-T
-T
Originally Posted by blkZ28spt
What have you added since you dyno'd 345 rwhp?
my a/f ratio was avg of 13.0 it was spot on all the way across.
the only thing odd on the graph was how the lines would reset themselves and redraw the lines. they still kept with the curve but they would stop and then go again, id post a pic, but im not at home right now.
I am starting to think that these are probably a bad batch of cams. You are not the only one with this problem recently. I went from a TR220 114 to the F13 114 and gained no power? My dyno graphs look exactly the same. With both these cams I had my car tuned and both times it was running lean around 14. No it was not a Mustang dyno either. If any one wants to host and post my dyno graphs let me know. I don't have a scanner at the moment. Let me know so I can fax them. A visual might help resolve the problem. I might contact Alan myself come Monday.
TR220 114
Max HP= 347.2
Max Torque= 382.2
F13 114
Max HP= 347.9
Max Torque= 376.0
TR220 114
Max HP= 347.2
Max Torque= 382.2
F13 114
Max HP= 347.9
Max Torque= 376.0
12 Second Club
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Joined: Jan 2005
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From: NC, Charlotte / SC, RockHill
A freind of mine dynoed 410 rwhp and 400rwtq with a f13 and a patriot stage 2 heads, with a A4 with no stall on 04 GTO.... but he got those no. after a long time effort of tuning and hard work. though he is trying to squeeze more hp with doing more and more work on tuning , just to let u know that the first time he dynoed something close to u thats around 390rwhp .... so i think u got a plenty of loosen hp that must be squeezed from your ls1.
good luck
good luck
Originally Posted by GOGO
Im not freakin out yet. I do have to go over the tune some more. I purchased the cam during the last cam sale Futral had. A few months ago.
-T
I'd be extremely pissed.
I did 412/378 with the F-15, stock LS1 heads, stock TB, no underdrive pulley and through a Vette drivetrain.
IMO, if you can't go over 450+ rwhp with some ported LS1 heads and a bigger cam, go the fu*k home. I'd expect 470+ with some ported LS6 heads on the stock bottom end.
Mike
I did 412/378 with the F-15, stock LS1 heads, stock TB, no underdrive pulley and through a Vette drivetrain.
IMO, if you can't go over 450+ rwhp with some ported LS1 heads and a bigger cam, go the fu*k home. I'd expect 470+ with some ported LS6 heads on the stock bottom end.
Mike
Honestly, I'd look more at the heads/tuning for power issues.
Sadly enough, everyone and their grandmas are head-porting gurus on the internet, but only a select few ever put out.. 450+ rwhp. The others just seem to take your money.
These heads from the factory were so meticulously engineered, it shouldn't be much of a problem putting down some serious numbers when they are ported by reputable companies.
Mike
Sadly enough, everyone and their grandmas are head-porting gurus on the internet, but only a select few ever put out.. 450+ rwhp. The others just seem to take your money.
These heads from the factory were so meticulously engineered, it shouldn't be much of a problem putting down some serious numbers when they are ported by reputable companies.
Mike
Staging Lane
Joined: Dec 2002
Posts: 99
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From: Elkridge, MD
I got mine at the end of May. I know tuning is not the issue, and I would hope that the heads are ok considering the $$$$. Honestly, I was not happy with the numbers, but figured the car ran well and I would see what happens at the track. I was never expecting 450+, but I figured 420 was very attainable.
