tom281

Hey all:

I had my car dyno'ed today and after reading alot of posts and looking at other people's dyno results, I feel pretty disappointed with mine.

My car is an '06 manual, and has JLT series 2 cai, a SCT X2 with Brenspeed tuning, and a Bassani catback. My numbers (corrected) on a dynojet dyno were 276h /306 tq. I don't have a baseline for comparison, nor did I get the air/fuel monitored (will do that next chance I get). Don't these numbers seem really low, especially the hp?

Any advise? Thanks.

Cleveland

Being on a Dynojet should net higher results, not a huge amount though.

Dyno results are just another bragging right, if the car is just as fast as the next with the same mods but the advertised dyno figures are completely different, does it really matter anyways? No, no it doesnt

-Dan

wild stray

Is the tune for 87 or 93 octane?

Paul

wild stray

If it's an 87 tune, you are right on the money. My 87 tune showed 277 and 297 on a dyno jet. If the tune is a 91 or 93 tune, council with Brenspeed about your results.

Paul

acadian

Paul is right... if it's 87... it's really not that bad off. Your tuner may not be that 'good' at fine tuning the '05/'06 a/f ratios, etc. But, you aren't too far away. By the way, did you mean the Bassani axleback? I didn't think Bassani makes a catback exhaust for this car.

tom281

The tune loaded is for 93 octane and yes I do have 93 octane fuel. I didn't try out the 87 or 91 tunes. Should have clarified about the Bassani system; yes it is the axle back kit.

tom281

Point taken; however, I don't care about bragging rights. I'm more concerned about having spent my cash on mods that maybe haven't performed as I hoped or as they should. However realizing that I don't have a bench mark to go by has me considering removing the JLT kit and installing the stock tune to get an established baseline.

Thanks for your input.

ts

wild stray

My feel is that you should be at 280+hp, but the only other thing I would question is how many miles do you have on the car? Have you given her a chance to fully break in?

Paul

tom281

Car has about 1700 miles or so......

I've emailed Brenspeed and I'm sure I'll get a response next week. Meanwhile, I plan to get a bung installed on my H pipe and head back to the dyno; I need to know that a/f ratio.

Thanks.

ts

wild stray

My personal view is you have top notch upgrades and a top notch tuner, (SCT & Brenspeed). Your car should start loosening up around the 3000 miles mark and I would suspect you'll see better mileage and prolly more horsies.

Good luck!


Paul

Shifty

Did you baby the car for the first 1000?

acadian

I agree... your mods, although there are only three... are the best of their categories. I don't think the problem, if any, lies in the mods... but the problem is either your tuner or your current 'canned' tune. Get you tuner (with the dyno) to mess with the a/f ratios and I guarantee you'll jump to 280 at the wheels, or above.

tom281

Actually, no. I've always believed that for break-in period, drive it like you're gonna drive it. No babying allowed..... No need to bounce it off the rev limiter, but let it know that it's close!

Thanks.

6505pony

Don't feel that bad I'm at 266hp/278tq with my mods listed at a 93 tune on a dynojet. The car runs much better than stock but I either need to send some data logs to Lidio or have a custom tune done to see what is wrong.

tom281

I think you're right........ after pulling out the dyno chart, my hp peaked at about 4900 rpm and was level (flat) until the end of the run at 6200 rpm. That just doesn't seem right! Max power for these engines should be at around 6000 rpm, shouldn't it?? Above 4900 it didn't drop, no spikes, just flat to 6200.

My torque was 265 at 1650 rpm and peaked at 306 at 4200 rpm. Torque curve looks good overall, pretty broad.

ts

Firedude

What gear was the car in for the pulls? Needs to be 4th. Also, was it cool? You can loose over 15 hp with heat soak.

tom281

It was cool, ambient temperature was in the room was low 60's (they had their overhead doors open) and the engine was allowed to cool between runs. And it was in 4th gear; that's 1:1 ratio right? Thanks.

tom281

Thanks to everyone for your ideas and input. I hope to talk to Brenspeed next week and get some tuning time with them. Overall, I'm happy with the products that I have and I'm sure that the custom tuning will help.

ts

wild stray

Peak hp at 4900 is actually a little high (rpm's), but peak is not what you are looking for. You are looking for usable average. I pulled a dyno chart that's as close to your mods as I could find. Will give you something to compare to at the least. Believe my peak includes three or maybe two hp from ud pulleys at the time. If your tune is keeping good average hp through the higher rpm's, you are prolly doing quite nicely right now, although the roughly 15 degree difference (my numbers were at around 77-78 degrees ambient) should show better hp on your numbers, IMHO. Brent is the man though, council with him if possible .
Paul

wild stray

P.S.: I have a collection of dyno graphs with custom tuning at various stages of mods and at $200 per hour, if I were still married, prolly I'd be burried!