Hill1513

Ok, now I'm curious. Anyone know the exact differences between the 08 and 09 computers in the SS/TCs? Is it calibration? That 280+ hp to the wheels post has me wanting to get my 09 to a dyno asap.

ecotecon18s

X2...that post made me do a double take...

Cobalt SS 2009 TC

Well It could be right becuase the 09 has a different OS

Hill1513

Exactly. However, I'm just wondering on what exactly the differences are. I wonder if GM is talking. Either way, it'll be interesting to see others backing these numbers up.

Cobalt SS 2009 TC

Well my 09 is coming in this week so i might take it up there and let you know what it is.

blackbird

That was one single dyno result and I'm sure if you're familiar with dynamometers you'd know they don't all read the same. You could "tweak" certain things on a dyno and have it produce inflated numbers or have other variables affect what it will produce. And it's very difficult to compare numbers from different style dynos. Even if that particular dyno was reading off a bit as long as it is consistent it should work great for him to show gains/losses in power due to modifications, and that is where a dyno is truly useful, not for producing absolute hp/torque figures. If you want to compare chassis power numbers of cars across the country an intertia style Dynojet with an SAE correction factor applied is usually the best bet. Then back it up with trap speeds at the track.

The computer hardware is the same between both cars and I bet the calibration (software/tuning) is the same between the '08 and '09 cars. If any changes were made they'd generally be to address drivability or emission issues. Hoping for more power when GM still rates the '09 the same as last year is wishful thinking.

Hill1513

Yeah, I'll be seeking a dyno real soon myself to try to confirm these numbers.

I understand and agree with you blackbird, but we can't be sure without additional dyno pulls I suppose.

Zander916

I think something is fishy with that dyno... 280 to wheels? On I think they said 16.7 PSI? Doesn't sound right at all. 280whp maybe with 22-24 PSI.

I'm willing to bet when more 09's get dyno'd we'll see more 08ish numbers.

BowTieTillIdie

well see

MapOfTaziFoSho

I'll see if I can get a few pulls at my friend's shop.

Bandit1

I am gonna set something up for friday.3 pulls for $40 bucks sounds good.I want a baseline anyway(with sae numbers).Does anyone know what a dynojet 224x is?He said it's an in ground dyno.Is it junky or will it be adequate,lol...

06blackg85ss

iTrader: (1)

god still with the dyno.
I have nothing to prove nor gain with that, I was just posting the results... it's not even my car.
Anyway, no one knows since you can't open the calibration file on the 09's yet.
I'll post up the differences though when Bill sends me the new hpt software

krispy

09 ECM was graced by the Gods
08 ECM was inappropriately touched by the Clergy

Does that sum it up to everyones satisfaction?

blackbird

Best bet would be to set up a local dyno day for new SS Turbo owners. Then you could compare multiple stock '08 and '09 cars on the same dyno on the same day under the same conditions.

06blackg85ss

iTrader: (1)

That sounds good

SSpdDmon

What if you buy an '09 A-pillar display (RPD?) and an '09 PCM and put it on an '08? Do you think everything would play nice???

Coco Balt

Their is no diffrence with the motor from 08 to 09. The dynos for the 08 owners were done on dynojets. The 09 dyno was on a mustang dyno. Mustang dynos overrate engine output.

Bandit1

Well,i see a dyno group maybe goin on way up north,but i'm not drivin 3.5 hours each way.:banghead:

I am gonna go here.Can do friday or saturday if another tc around in area want to go for comparisons.3 pulls $40.Its west side of columbus vincinity of roberts rd....>

Advanced Imports

3500 Millikin Ct., Suite F

Columbus, OH 43228

(614) 771-8966

cmiller8006

iTrader: (3)

I had the parts dept. at work look up the ecm, and they said there was two different part numbers for the 08 and 09 ecm.

krispy

I only found one on the same system.

cmiller8006

iTrader: (3)

There is one that has 08-09 ecm and one that has 09-09 ecm. Next time I work I will get the part numbers. Also this is what he told me so we will see.

Hill1513

Wow.

krispy

12614967

Thats the part number listed for 08-09, no other numbers listed that I saw.

Zerort

Can either of you find out the part numbers for the brake pads and the caliper? I'm on a mission to get aftermarket pads that don't create so much dust. I know this caliper is out there on some other car, so I know they make other pads that will work.

Zander916

It makes sense that they would have two different part numbers with two different OS. I'm guessing the biggest difference being for the display option on the 09's.

Mainly because you wouldn't want to get an 08 ECM stuck into an 09 with the display should something go wrong with it down the road. Then have pissed off customers because they have to wait, and wait and trial and error to find one that worked. lol

Do have something personal with me? You seem to always pick out my posts for some reason.

PM me if you have beef with me. I'm not saying that in any sort of threatening manner whatsoever. I'd just like to get to the bottom of it if you have a problem.