C5 Dyno Results
Thread Starter
Heel & Toe
Joined: Apr 2013
Posts: 21
Likes: 0
From: Tucson Az
C5 Dyno Results
I purchased a 1998 C5 a couple months ago. It's equipped with a Magnuson Supercharger and exhaust. Not sure what else has been done to the engine. I put it on a Dyno yesterday and was a little disappointed with the results.
It came up with 428 RWHP.
The Dyno guy is recommending a $550.00 tune up. The car has 52,000 miles on it.
I'm thinking of getting some tune software. Any suggestions?
Do these RWHP results seem ok?
Tom
It came up with 428 RWHP.
The Dyno guy is recommending a $550.00 tune up. The car has 52,000 miles on it.
I'm thinking of getting some tune software. Any suggestions?
Do these RWHP results seem ok?
Tom
Last edited by Captain Tom; Apr 11, 2013 at 03:30 PM.
Drifting
Joined: Oct 2003
Posts: 1,932
Likes: 4
From: Warrenville Il
Those dyno numbers don't sound too bad since factory for 98's was around 290's at the rear you have about 130 rear hp with the supercharger. I don't believe the roots type blowers ran that much boost either. If you don't have any experience with tuning then you might want to let the experts do it since you are already working with a supercharged platform. If you're doing the tuning yourself you would still need to get it on a dyno which I assume the 550.00 from the shop will be tuned using a dyno so you would still need to have it put on a dyno for a fee anyways.
Last edited by MG RED 99; Apr 11, 2013 at 05:34 PM.
Thread Starter
Heel & Toe
Joined: Apr 2013
Posts: 21
Likes: 0
From: Tucson Az
The blower does set on an intercooler. I have no idea if it has cam. It does have headers with Mangnaflow exhaust. Also looks like an after market computer. Stock air box with k&n filter
Last edited by Captain Tom; Apr 11, 2013 at 06:08 PM.
Melting Slicks
Joined: Mar 2008
Posts: 2,962
Likes: 254
From: Richmond, Ky
It sounds really good to me for just the blower and exhaust. I have a magazine article that showcased that very blower on a stock C5 and it matched the manufacturer's claim of 100-110 hp over stock. I could be very happy for a while with 425 rwhp!
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Pro
Joined: May 2011
Posts: 580
Likes: 1
From: Chicago Suburb
St. Jude Donor '13
What they all said. 428 RWHP is quite respectable.
It also depends on the dyno and it's "calibration". You also need to appreciate that 428 at the wheels is = approx. 500 at the flywheel.
It also depends on the dyno and it's "calibration". You also need to appreciate that 428 at the wheels is = approx. 500 at the flywheel.
Thread Starter
Heel & Toe
Joined: Apr 2013
Posts: 21
Likes: 0
From: Tucson Az
Thanks for the info. Sounds like I don't need the $550.00 tune up. I do want to change the plugs. I'm in a desert climate at 2000' elev. Any suggestions?
P.S. It is and Automatic.
Also I'm getting a 130lb oil pressure display
P.S. It is and Automatic.
Also I'm getting a 130lb oil pressure display
Last edited by Captain Tom; Apr 12, 2013 at 02:54 PM.