1st dyno today-it was sad

[135 Boom]

So I bought my 04 Cobra bone stock 8 months ago and have been throwing stuff on it to put down some decent numbers, but that did not happen. My buddy has a 13 STI and he took it to Cobb in Plano to put a 20G on it, so I figured it would be prime time to dyno mine too. This page should be updated this week with my numbers. http://www.cobbtuning.com/Dyno-Database-s/70119.htm

Mod are- Catless X pipe, Magnaflow catback, JLT cold air intake, 2.8 pulley and 100mm snub idler, LFP throttlebody/Plenum, Intercooler expansion tank, TR6 plugs and it is tuned by Amazon on 91 octane (lame I know, its all we have).

So to start it was a mustang dyno, which is depressing and it was 90 degrees. I drove it 3.5 hours then let it sit for 2 before the dyno. I was still hoping to be in the low 400's with that in mind. After 3 runs the best it put down was 345WHP and 400TQ:shrug:. WTF? It feels strong, but now I am worried. That is less than stock on most dynos...It was a long ride home to say the least. You guys think my tune sucks or the dyno sucks or my car sucks?

I hope I die soon.

 

[NiceCobra]

What did the sti put down? With a 20g and supporting mods he should be around 350whp

 

[racebronco2]

Don't worry, the dyno is just a tuning tool. Track times will tell the real story. I went once when my car had a stage 5 ported blower and plenum, long tubes and a 2.76 upper and it was only at 395rwhp so i know how you feel.

 

[135 Boom]

He put down 335AWHP and 350TQ.

 

[135 Boom]

I think my tuner sucks, so I am getting a new tune. I posted in the Terminator group on FB and have come to the conclusion the tune is crappy. Hope I didn't ruin anything...

 

[NiceCobra]

He has low numbers compared to typical dynos also . So the dyno is def just a low reading dyno. My buddy made 380whp with his 20g sti on another mustang dyno, all dynos read differently.

 

[spray'n mach 1]

it's a mustang dyno it will be low.

 

[03' White Snake]

Something is wrong. Either shitty tune, your bleeding all your boost or something.

My brothers cobra put down 375 with only a K&N filter added to the maf. Stock exhaust, stock pulley, stock everything. This was a dynojet but still. If you are really pullied down to a 2.8 you should be making 14 lbs or so and waaay more than 345, even if its a mustang dyno.

I put down 415 on a mustang dyno and 445 on a dynojet with a 2.93 upper and 4 lb lower.

 

[Joyrider564]

How much timing do you have in it, and what is your afr at WOT?

 

[Zemedici]

^this, you have the dyno graph?

 

[135 Boom]

I don't know the timing and I do not have a wideband. They also did not hook up a wideband. It was just a baseline pull, on the dyno and off in 15 minutes. Dyno graph should be on here in the next few days. http://www.cobbtuning.com/Dyno-Database-s/70119.htm

The graph is even way off, so I think it was a combo of crappy tune and the guy running the dyno not caring.

 

[BlksvtCobra01]

I think you need to find another shop a reputable shop ASAP to verify you have a good tune. Why was there tail sniffer/wide band not hooked up when dynoed?

 

[135 Boom]

I think you need to find another shop a reputable shop ASAP to verify you have a good tune. Why was there tail sniffer/wide band not hooked up when dynoed?

I am for sure. No clue, I really think he didn't care.

 

[Bdubbs]

Dyno numbers can be depressing sometimes, but take it with a grain of salt. Some shops I believe have very "happy" dyno's. Also I've heard more bad than good when it comes to amazon.

EDIT: Do you even know what your a/f ratio and timing is set at? Hell you might be on 13 degrees of timing and running very rich.

 

[CobraBob]

Those numbers are definitely very low, but I wouldn't get overly concerned because you said your car feels strong. For peace of mind, I would definitely find a good and reputable tuner and get a dyno tune. Ideally tune it at another dyno. Especially if the operator of the MD has a very lackadaisical attitude.

 

[Ourobos]

I have VERY similar mods, with 16 degrees timeing and 13.5 PSI, made 455hp (dynojet numbers). And I was running out of fuel or could have squeezed 18-19 degrees timing. You should be over 400 at least.