howarmat

you have that switched

md = 90% of a DJ

GT John

+1

You will want to raise the timing up to a point where your knock sensors start detecting a knock and then back the timing down 2 degrees.
You can do the datalog while doing the pull.

Just take it easy.

hypersurf1

390 for a paxton 2200 is pretty low. Whos tune are you running? What was your PSI and what RPM did you pull too?

p.r gt

i"m runing 10 psi and it "s on a dyno jet and it up to 6300rpm, she haves l/t header ,x pipe andd mac a/b ,delet plates ,39 lb injectors , 0 degree plugs , bap this is a brenspeed kit

hypersurf1

Are you running the HT0 plugs gapped at .32? You are about 90HP short of where the 2200 should be. I would call Brenspeed and ask them what they think.

Also what is your altitude? You will lose 5% power for every 1000 feet over sea level. So if you were at 5000 feet then you HP might make sense.

MexGT

I dont think the 5% power loss aplies the same ratio as a SCed car as a NA car.

hypersurf1

I think your right, the effects on altitude would be less then 5%, sorry for the confusion.

cleggyone

Help a noobie out, I am looking into a 2200 Paxton kit which advertises "up to 170hp increase", assuming that is at the crank, 300HP is stock, (I have a '07 GT, auto), that would be 470 HP at the crank, 80% or so would be 376 HP at the wheels right? So prgt's #s would be about right, actually if on a Mustang dyno, pretty good! Am I missing something?

Thief_of_Hearts

it's advertised as WHP and on a stock GT at that...

376whp is great but in contrast to what you are supposed to be having??

I'd be pretty concerned lol.[:'(]

moosestang

How hot was it out when you dynoed 390? 14 degrees of timing at WOT sounds very conservative considering I've seen 18.5 degrees with a stock whipple tune, but that was on a cold day. If it were hot out or you had some detonation then I could see 14 degrees. I would definately email brenspeed and send your dyno graph if you have one.