I could not pass up $40 for the dyno. Esp since we were rained out at Castrol Race Way. Drove all the way up to Edmonton--may as well Dyno it.

4th gear pull---Dyno-Jet

158hp
154lbs-ft.

I'll have a graph up in a few days but had several witnesses. Hp peaked about 6500rpm (maybe a bit less) and was very rich according to he operator.

It was pretty cool---the guy behind the wheel had it up to about 7000rpm in 4th gear---200km/h. (pic was taken a bit before.

I have never been to even watch a live dyno session, so I thought it was neat.

Real happy with the numbers.

 

Cool

 

Nice

 

OK please help me...I dont know what is considered good...clue me in...I have a 2.4 also...

 

By my calculations it means we are pulling close to 180 HP at the flywheel......AND THATS PRETTY GOOD!

 

I beleive that 158 has been done before but no one has higher......other 2.4 dyno guys please chime in here

And look at my mods--stock excpet for the Injen SRI. No aftermarket exhaust here.
I'll have short vid of the 157hp pull up tomorrow

 

ok cool...

 

Don't you have a Wester's ECU tune?

 

I was wondering that myself, did you get rid of it?

 

hot... woah, those are totally NOT the same as the american gauges.

 

hmm.. guess he got rid of it

 

Yeah Canadian 2.4L Cobalt guages are black. I hate them. Really hard to see in the sun at times, and I can't see MPH at ALL so it's tough when I drive down to the states. Canadian G5 Pursuit GT's come with white guages, but it would probably be way too expensive to buy a new cluster from GM and do a swap. Guess I'm stuck with an overlay from Black Cat Customs when I get around to it.

 

good numbers I've been wanting to get another dyno run on mine I had to settle with a
2nd gear pull cuz of the damn traction control My numbers are on my signature.

 

Avro thanks for the stats

 

No still have it. Heres the thing though....

It is a mod--BUT its a mod that did NOT work. I track tested it before and after---it did NOTHING for my car. I have the slips too.

I have been the only one to track test Westers tune before and after. Believe me I was disapointed. I bought a chip a few years back for my Camaro---it slowed my car down!

So if it did nothing---its really an ineffective mod and has zero to do with my dyno numbers.

The dyno operator said the fuel mixture was really rich at high rpms--wasn't a tune suppose to lean it out???

My Injen SRI however, did make my car 0.1 faster and added 2mph. Again---before and after track test PROVED it.

Heres the video

http://www.youtube.com/watch?v=hNO6vQoO2qc

 

welll that sucks avro

 

You definatly need to get that thing dyno tuned. Mine from vector dynoed close to your numbers but it was on a mustang dyno so they will be lower then what a dyno jet spits out.

 

I dyno'd on the dynojet a few weeks ago and my best was in 3rd gear with 165.5hp / 157.1tq

Mods are in the sig.

 

Here are my sheets finally:

Best run:


All four runs:

 

I guess this means that I will go with the Vector tune over Westers.

 

Hey Avro.. How much did you pay for your intake by the way? I'd like to find a supplier that can deliver a product and not bullsh!t me.. thanks

 

TTR was $214.99 when I bought mine. Came in like 3 days.

www.turbotechracing.com

 

umm..he live in Canada.

I went through a local import speed shop (Speed Tech) Cost was $350 taxes in. Took about 6 weeks though....cause Injen sent the wrong one

 

thats a nice curve you have. Hope to have my dyno sheet in a few days---but my hp took a good decent after 6500rpm (from what I can remember)

 

Wow, those are great numbers.

No offence, but I think you are selling your Wester's tune a little short though.

If you look at the stock torque curve straight from GM, the 2.4l cobalt engine makes it's peak hp at only 6200 rpm. This is confirmed by Brandon's stock dyno making max hp at 6200rpm. After Brandon's Vector tune, he made max ponies at 6600rpm. It looks like you are peaking around 6400rpm and holding it till around 6600rpm, while still making great numbers all the way up to 7100rpm from your graph!

Now you can't compare hp readings from one dyno to another, but you can compare the max rpm at which they occur and since torque x RPM = hp, the higher you rev, the greater hp potential you have - if you can maintain a nice flat torque curve.

Your torque curve is much flatter than the stock gm curve. In fact, it looks more like the 2.0sc's turque curve, coming on real strong early. As you know, the true performance of an engine is measured not by peak numbers, but by the total area under the curves - and yours looks pretty darn good. I think if your engine were allowed to breathe a little better, the top of the curve would flatten out a little more.

How were your A/F ratios and MAF frequencys? I was concerned about my stock 24lb injectors nearing their max duty cycle at the kind of rpm you and I are making. I've got some 34lb injectors off of a stock SC just incase. If you run the formulas on RC Engineerings website, you'll notice our injectors are at about 90% duty cycle on our stock engine. We use the same injectors as the 2.2l which are running them at about 80% DC.

As to why you didn't notice any better 1/4 mile times, who knows? A lot of other factors are involved - too many to speculate. Anyway, nice results.