Horrible day at dyno
08-26-2009, 10:06 PM
#1
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Horrible day at dyno Well car only made
367 HP
345 Tq
Mustang Dyno
Mods
TFS 205cnc heads
TFS stage 4 cam (238-242 ,595 .595)
FAST 92 mm intake ported by Vengeance
NW 92 MM TB
Pace setter long tubes and y-pipe
Magnaflow cat back
Lucas 42# injectors
Racetronix pump and harness.
Have no idea why the numbers are so shitty. Power actually dropped off at 5950 rpm?!?!?!?!!!??!?!?!!?!?!?!??
Car was tuned by a reputable tuner, that did the car before and made great power.
I hate this car right now.....
I dont have a scann of the graph or any logs to go off either.
367 HP
345 Tq
Mustang Dyno
Mods
TFS 205cnc heads
TFS stage 4 cam (238-242 ,595 .595)
FAST 92 mm intake ported by Vengeance
NW 92 MM TB
Pace setter long tubes and y-pipe
Magnaflow cat back
Lucas 42# injectors
Racetronix pump and harness.
Have no idea why the numbers are so shitty. Power actually dropped off at 5950 rpm?!?!?!?!!!??!?!?!!?!?!?!??
Car was tuned by a reputable tuner, that did the car before and made great power.
I hate this car right now.....
I dont have a scann of the graph or any logs to go off either.
08-26-2009, 10:25 PM
#2
I am really interested in seeing what kind of number it will run at the track. My bet is ( if the car is running as it should), the car will perform way outside what those numbers say.
you didn't mention if it's A4 or M6 and if it's stalled, gears, rearend, wheels, etc.
you didn't mention if it's A4 or M6 and if it's stalled, gears, rearend, wheels, etc.
08-26-2009, 10:38 PM
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I am really interested in seeing what kind of number it will run at the track. My bet is ( if the car is running as it should), the car will perform way outside what those numbers say.
you didn't mention if it's A4 or M6 and if it's stalled, gears, rearend, wheels, etc.
you didn't mention if it's A4 or M6 and if it's stalled, gears, rearend, wheels, etc.
10 bolt with 3.73's
18" corvette magnesium wheels.
Car will be at track in a few weeks
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08-27-2009, 06:59 AM
#11
How much advance was on the tuning 26 or 28 degrees? What kind of spark plugs, What thickness head gasket? How is the oil pressure? M6 or auto? I was in the same situation with afr heads and ported fast I made 424 rwhp and 400 tq but I was still down about 30 rwhp. Found out there was metal shavings in the oil from cam retainer plate rubbing almost destroyed my motor. Now it is being rebuild by Rev xtreme in Bradenton Fla. Hoping to pull over 450rwhp when it is all said and done.
Also I had crappy spark plugs only gapped to .30 thousands should of been to .50 thousands.
Also I had crappy spark plugs only gapped to .30 thousands should of been to .50 thousands.
08-27-2009, 10:09 AM
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How much advance was on the tuning 26 or 28 degrees? What kind of spark plugs, What thickness head gasket? How is the oil pressure? M6 or auto? I was in the same situation with afr heads and ported fast I made 424 rwhp and 400 tq but I was still down about 30 rwhp. Found out there was metal shavings in the oil from cam retainer plate rubbing almost destroyed my motor. Now it is being rebuild by Rev xtreme in Bradenton Fla. Hoping to pull over 450rwhp when it is all said and done.
Also I had crappy spark plugs only gapped to .30 thousands should of been to .50 thousands.
Also I had crappy spark plugs only gapped to .30 thousands should of been to .50 thousands.
Total timing was at 29 degrees.
Using GM MLS gaskets.
Oil pressure was fine.
Stalled A4 ran in 3rd gear with converter locked.
NGK TR6 plugs gapped at .050
08-27-2009, 12:22 PM
#15
If power is dropping off at 5900rpm you need to take a look at your valvetrain... Pushrod length correct? Valve float? Lifter Preload? Any knock retard? Verify actual timing during the pull, not just whats programmed by the tuner? MAP readings? Missing a cylinder IE Misfire/injector etc etc??
There are alot of variables in your combo using an A4 on a Mustang dyno, but I would expect the car to pull to 6300rpm at minimum.
There are alot of variables in your combo using an A4 on a Mustang dyno, but I would expect the car to pull to 6300rpm at minimum.
08-27-2009, 12:29 PM
#16
If power is dropping off at 5900rpm you need to take a look at your valvetrain... Pushrod length correct? Valve float? Lifter Preload? Any knock retard? Verify actual timing during the pull, not just whats programmed by the tuner? MAP readings? Missing a cylinder IE Misfire/injector etc etc??
There are alot of variables in your combo using an A4 on a Mustang dyno, but I would expect the car to pull to 6300rpm at minimum.
There are alot of variables in your combo using an A4 on a Mustang dyno, but I would expect the car to pull to 6300rpm at minimum.
08-27-2009, 12:48 PM
#17
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Ditto to what Ron said. That cam should pull to 6300 no problem. My car with non ported LS2 heads and a 238/242-605/610 stops making power just a hair over 6500 and that's with a LS6 intake and stock t-body.
After you've double checked everything including the tune, take it to the track..
Also man, what kind of Y pipe and cat back are you running? My car was stuck at the 370 mark with my crummy y pipe with the cut out open. Did a 3" mandrel with Flowmaster merge, cut out 3" over axle with a magnaflow muffler, and it went over the 400 rwhp mark. Hell it did 389 with the cut out closed.
After you've double checked everything including the tune, take it to the track..
Also man, what kind of Y pipe and cat back are you running? My car was stuck at the 370 mark with my crummy y pipe with the cut out open. Did a 3" mandrel with Flowmaster merge, cut out 3" over axle with a magnaflow muffler, and it went over the 400 rwhp mark. Hell it did 389 with the cut out closed.
Last edited by Twotonefreak; 08-27-2009 at 12:53 PM.
08-27-2009, 11:43 PM
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If power is dropping off at 5900rpm you need to take a look at your valvetrain... Pushrod length correct? Valve float? Lifter Preload? Any knock retard? Verify actual timing during the pull, not just whats programmed by the tuner? MAP readings? Missing a cylinder IE Misfire/injector etc etc??
There are alot of variables in your combo using an A4 on a Mustang dyno, but I would expect the car to pull to 6300rpm at minimum.
There are alot of variables in your combo using an A4 on a Mustang dyno, but I would expect the car to pull to 6300rpm at minimum.
