MS4 Cam only dyno numbers
10-12-2007, 10:45 PM
#1
MS4 Cam only dyno numbers Finally got her to the dyno to do some fine tuning and see where she's at. Mods are the following:
Lid
SLP Long tubes
3" dual exhaust w/ x-pipe/magnaflow 4x9's
LS6 intake
P&P TB
MS4 cam
3500 stall converter
Runs were done with an UNLOCKED converter. I'm very pleased considering no underdrive pulley and converter was unlocked. Made 390hp and 340tq.
Lid
SLP Long tubes
3" dual exhaust w/ x-pipe/magnaflow 4x9's
LS6 intake
P&P TB
MS4 cam
3500 stall converter
Runs were done with an UNLOCKED converter. I'm very pleased considering no underdrive pulley and converter was unlocked. Made 390hp and 340tq.
10-13-2007, 12:33 AM
#3
11 Second Club
iTrader: (13)
Join Date: Jun 2002
Location: The Confederacy
Posts: 3,063
Likes: 0
Received 0 Likes
on
0 Posts
Whoever told you that graph was locked was lying to you. The converter was locked on that pull. Also, it's kind of standard operating procedure to post SAE numbers, not STD numbers.
10-13-2007, 08:46 AM
#5
Don't have the SAE numbers. I think it was like 385hp, wasn't much of a difference. How do you know it was locked? The first dyno run had it locked and the guy running my car/dyno thought it shifted and got off it right when he started the run. So he told my buddy who was scanning with hp tuners to unlock it, and he did.
10-13-2007, 10:55 AM
#8
Teching In
Join Date: Oct 2007
Posts: 29
Likes: 0
Received 0 Likes
on
0 Posts
Yeah, wanted to see where the motor made the best power, timing wise. Ended up at 27 degrees total timing. 29 dropped power, and 25 dropped power, so 26.5-27.0 is where it'll stay.
Also found out, his LC1 was reading about 1 pt low on the AFR. I tuned it to a 12.8-13.0, just to find out it was a 13.8-14.0
The converter has noticeable slippage, even up around 6500 rpm. That's what he means by 'run unlocked' - the torque converter lockup solenoid was disabled (it seemed to bother the dyno operator, and whatever - I wasn't worried about the exact numbers, just their relation to one another as I tuned)
Anyway, the car is a beast. It breaks loose under 60mph with a full throttle punch (even with about 500 lbs of people in it)
And as I'm fond of saying about it - IT JUST KEEPS PULLING!
Also found out, his LC1 was reading about 1 pt low on the AFR. I tuned it to a 12.8-13.0, just to find out it was a 13.8-14.0
The converter has noticeable slippage, even up around 6500 rpm. That's what he means by 'run unlocked' - the torque converter lockup solenoid was disabled (it seemed to bother the dyno operator, and whatever - I wasn't worried about the exact numbers, just their relation to one another as I tuned)
Anyway, the car is a beast. It breaks loose under 60mph with a full throttle punch (even with about 500 lbs of people in it)
And as I'm fond of saying about it - IT JUST KEEPS PULLING!
10-13-2007, 12:36 PM
#9
Don't have the SAE numbers. I think it was like 385hp, wasn't much of a difference. How do you know it was locked? The first dyno run had it locked and the guy running my car/dyno thought it shifted and got off it right when he started the run. So he told my buddy who was scanning with hp tuners to unlock it, and he did.
You'll probably walk me from a dig anyway.... 6-speed on nitto's.
10-13-2007, 06:38 PM
#12
TECH Fanatic
Join Date: Jul 2006
Location: North Bay, Ontario
Posts: 1,180
Likes: 0
Received 0 Likes
on
0 Posts
torque numbers dont look too great, but what can u expect from an ms4. Must be a dog in lower rpm. Id think you would be able to hit higher numbers on a dyno with that cam, even if its an A4. Probably hit "normal" once its locked. Must sound NASTY!
10-17-2007, 10:46 PM
#19
Teching In
Join Date: Oct 2007
Posts: 29
Likes: 0
Received 0 Likes
on
0 Posts
The torque converter lockup solenoid was disabled completely on these runs.
Ran a 12.3 @ 112.5mph tonight, on street tires, with about 76 degree weather and 88% humidity, btw.
*edit* which equates to about 415rwhp with his heavy *** in it (I put you as 300lbs, 3439lbs curb weight)
Last edited by Doward; 10-17-2007 at 10:54 PM.
10-17-2007, 11:04 PM
#20
I run cars everyday. That run looks locked. Whether you're manually locking it or not, by the rpm it looks high enough to be locked automatically, and stay locked.
Furthermore, theres no hump in the torque band which would be there with an unlocked stall.