spray175

Mods:

Steigemier Stage 4 Ported Eaton,TB,Plenum
2.76 pulley (15psi)
SLP Catback
JLT Ram Air Intake
LFP heat exchanger and intercooler tank
Billetflow Idlers

Dynoed at 475rwhp/476rwtq

freewilly

hey spray . nice #s ,you going to do anything else to it now. or you hooked on the boost now , and want more?

CobraBob

Nice numbers. Who tuned your car?

spray175

Well I was hoping for 500hp. My lower pulley kit came in today so i may put that on or I may just wait a while. Cant afford a KB or WHipple so Im stuck with the eaton.

Jon Lund tuned my car at evolution performance.

I was kinda dissapointed, I though I would make more than that.

freewilly

i heard the cam timing on most 03 04 cobras where out alot . that can cause a 40rwhp loss. i just dont have the tools to check and do all that. i dont think theres no way to even make 500 rwhp unless you got a 6lb lower, hell i didnt even make that.

spray175

He told me if I was on a dynojet I would have made close to 500/500 but it was a mustang dyno. I think if I add the lower pulley that should put me there. He said my fuel pump was almost at its limit. 97% or something. I will add a lower pulley and a midpipe and that should get me over 500.

freewilly

jms told me my injectors where not maxed out yet. he said at 520 there close.my a/f ratio they tuned it spot on. ill keep this combo for awlie , going to try to get some traction now. i got tq out the azz. with the 6lb lower you should have over 550 tq. tq rules.

freewilly

p/s post your dyno sheet so i can see the drop off

spray175

I forgot to get them from the shop. I need to call and see if they still have them.

CobraBob

You can definitely make 500rwhp without a 6 lb. lower (with a ported Eaton). I made 504rwhp with just a 2.80 upper. Stock lower. Generally if you are making 16 lbs. of boost you'll make 500 to the rear wheels. Go with a 2.93 upper and 4 lb. lower and you should make 500 as well (again, assuming your blower is ported). It is the upper/lower combos, though, that make the bigger torque numbers. My 2.80 upper made 494rwtq. Had I kept the car, I would have ultimately gone with a 2.90 upper and 4 lb. lower combo.