Can’t break 500 RWHP !
 

Car made 475hp with cam , 1 7/8 headers , e85. Added the ported msd intake , roto fab , 2in headers and converter and now it out down 480 . What could be the reason ? Timing #28 a/f around 12.9/13.1 5th gear pull

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You should easily be in the 500 at the wheels with everything you have. What kind of tune are you running? Street or dyno, that’ll make a difference.

I use HPTUNER .tuned it on the street and made some changes on the dyno but only gained 1hp and 4tq. Best time full weight is 10.8@126 no weight reduction

I see you have a drag pack..take it to the track and see what it traps. I have never seen a race won on a dyno.

126mph 800 DA , no weight reduction .

If your converter isn’t locking that will cost you quite a bit on the dyno. Also if you are using 5th that consistently reads 20-30 hp lower than 6th which is 1:1 and the accurate gear to dyno in.

If you are unlocked and in 5th your numbers are probably about right. Locked and in 6th add a good 50 hp plus to your numbers

I’m at 480-490 rwhp and trap around the same in that DA. But I’m a couple hundred pounds lighter than stock at least . I’d say you are probably around 530 rwhp as a guess

Sounds about right imo for the weight. Pull a couple hundred pounds out of the car and it will go 130. The rotational weight reduction offers big gains.

Yea the 10.8@126 was just the first run a mustang wrecked so didn’t get to run it again . And the converter is locked in 5th.

Mines a 2SS Full weight on full tank and I’m aroubd 250lb. Yea next mods are getting it on a diet including my self lol. Breaks and light battery

Off topic but what wheels are those? They look bad ass and I’m looking for a drag pack, sorry for off topic question!

Do you have a baseline of how much the car made before mods? Final HP means nothing without a baseline. Maybe you are on a low reading dyno. Or probably went with a small cam. 6th on A8 is the 1:1 gear as stated above you’ll see a but more there

Might just be the dyno your on. Try a different dyno.

Mine just put down 491 yesterday with basically the same mods, not sure about differences in cam sizes though. I am not too worried because the dyno here is known to read a tad low and I only really care what it runs at the track.

Hate high producing Dyno’s that brag, show me the trap speed
DA is a BIG factor too