Another dyno + PCM calibration comments

4978 Views 34 Replies 22 Participants Last post by GaRsNoW, Feb 12, 2005

UncleSmitty

Discussion Starter · Feb 10, 2005

2

Attachments speak for themselves =)

Did three total runs, this one's the first. Only "performance mod" so far is the removed airbox. Came out to:

1st - [email protected] [email protected]
2nd - [email protected] [email protected]
3rd - [email protected] [email protected]

First and second established baseline (I'm guessing the 4-5hp drop is from heat buildup), the third I tried the "bypass mod", disconnecting the block to solenoid line and plugging it... can't explain why it made no difference... All three runs were done in 3rd, for those counting.

On a side note, last week the dealer updated the PCM following "Bulletin 05-06-04-006" to correct hesitation when cold. After the calibration the car pulls much smoother and feels stronger... previously there was a big jump in power right @ 4000rpm, now it pulls strong throughout the range.

Smitts

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Smurf

· #2 · Feb 10, 2005

thats good to know about the PCM update.....I hate that lag before 4000rmp......its seems like when it hit the 4000rmp mark the car really takes off

redlin-er

· #3 · Feb 10, 2005

How long between pulls?

UncleSmitty

Discussion Starter · #4 · Feb 10, 2005

That's exactly what I was getting before the update. I was amazed afterward, felt like a whole new car the moment I left the dealership.

Btw, I've got the A/F ratio and boost numbers too, just didn't want to post a crapload of scans. If anyone wants them just holler.

UncleSmitty

Discussion Starter · #5 · Feb 10, 2005

Lets see... the sheets say:

1st - 18:54
2nd - 18:57
3rd - 19:01

So about 3-4 minutes between each.

haunter

· #6 · Feb 10, 2005

nice

150 wtq at 2300 rpms

BOOSTED

· #7 · Feb 10, 2005

Damn good #'s. I can't wait till you guys start doing pulley swaps. You guys need to look into ported your blowers. I know with my truck i the possibility to gain 30rwhp. It won't be long till you guys start breaking the 300 mark.

silver bullet

· #8 · Feb 10, 2005

Hey them numbers look pretty good. Now do you have the barry mod air box or what? What kind of air filter are you running?

UncleSmitty

Discussion Starter · #9 · Feb 10, 2005

Just removed the airbox and secured the stock filter, very "ghetto". I'm waiting for a real intake before I put money into a filter.

I was suprised and impressed w/ those numbers after the first run. I was expecting 10-20hp less!

MotorMouth

· #10 · Feb 10, 2005

216.8 hp=

Nice numbers!

YAKUSATURN

· #11 · Feb 10, 2005

i have to admit i don't know as much about these cars as you guys do.i hope this dosent sound like i'm an idiot,but are those #'s at the crank or at the wheel

JPK

· #12 · Feb 10, 2005

UncleSmitty said:
On a side note, last week the dealer updated the PCM following "Bulletin 05-06-04-006" to correct hesitation when cold. After the calibration the car pulls much smoother and feels stronger... previously there was a big jump in power right @ 4000rpm, now it pulls strong throughout the range.

Smitts

Hmmmmmmm.....would I be able to take my car in and get this calibration done even if I'm not having any trouble with cold starts?

I'd love for the car to pull strongly throughout the entire power band.

clownhair

· #13 · Feb 10, 2005

YAKUSATURN said:
i have to admit i don't know as much about these cars as you guys do.i hope this dosent sound like i'm an idiot,but are those #'s at the crank or at the wheel

dynos measure the horsepower output at the wheels.

Tom01SC2

· #14 · Feb 10, 2005

JPK said:
Hmmmmmmm.....would I be able to take my car in and get this calibration done even if I'm not having any trouble with cold starts?

I'd love for the car to pull strongly throughout the entire power band.

But you are having hesitations while cold, and trouble with cold starts

You heard about the recalibration and want it to cure the problem, lol...

Tom

Vita

· #15 · Feb 10, 2005

yeah, they better do it to mine, they've had the damn thing for a week now and haven't even called! can't wait to see if they fixed all i asked them to.

nice numbers by the way, theoretically, unless yours is a factory freak, i'm pulling the same! going to have to go to another dyno to do a comparison

JPK

· #16 · Feb 10, 2005

Tom01SC2 said:
But you are having hesitations while cold, and trouble with cold starts You heard about the recalibration and want it to cure the problem, lol...

Tom

You mean lie?????

That would just be wrong.

Sp00ner

· #17 · Feb 10, 2005

I got the ECM calibration last week, didn't say anything cause I thought it was just in my head. I thought that it was pulling better in the lower half of the Rpms as well. I'm not sure if it was or not, but it almost made me think the car was running worse because the jump at 4k wasn't as hard. I used to stall it once in a while too, but this morning I was noticing that I can damn near idle away without giving it gas.

silver bullet

· #18 · Feb 10, 2005

With the air box removed and stock filter are you getting more wine from the supercharger like I've heard from a few.

SilverBulletRL

· #19 · Feb 10, 2005

I'm heading up to my dealership on Tuesday to get the update!

I'll let everyone know if there's any differernce afterwards...

ZR2_S10

· #20 · Feb 10, 2005

Those are pretty good numbers.

Out of curiousity, why did you go w/ the STP standard correction rather than the SAE standard correction?

Jason

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