Dyno results, post graphs here
Nordschleife Master
Joined: Oct 2007
Posts: 5,471
Likes: 209
From: Tacoma, WA
Mike I love your torque curve!! It makes me want to retime my cams!
Stock 1995 C4, well it have a RS pulley & Motorsound mufflers/airbox.
I can't find the dyno chart of the C4S, but it did less then the C4 on a Mustang dyno.
Stock 1995 C4, well it have a RS pulley & Motorsound mufflers/airbox.
I can't find the dyno chart of the C4S, but it did less then the C4 on a Mustang dyno.
Addict
Rennlist Member
Rennlist Member
Joined: Feb 2004
Posts: 1,086
Likes: 2
From: Gemantown, TN
here's mine. rebuilt engine by Pat Williams (to stock specs) with Steve W chip and Fabspeed bypass pipes. I don't know how much difference it makes, but my air filter was uber dirty for this dyno run.
for those that don't want to go thru all the data the max hp is 270.6 and max torque is 251.6.
for those that don't want to go thru all the data the max hp is 270.6 and max torque is 251.6.
Thread Starter
Race Car
Joined: Sep 2003
Posts: 3,928
Likes: 4
Sounds like you have a other issues to addess first. Here is mine after getting the car back into shape. Stock motor (124k miles),200 cell cats , no mufflers, stock chip, new plugs, wires, caps, rotos, injectors cleaned, intake cleaned, all fluids changed, etc, etc, etc....
From the big dip at 5500 rpm I would check for vacuum leaks or a faulty resonance valve.
I think 240 - 250 (+10 with chip) for totally stock is pretty normal on a Dynojet. On a Mustang 210-220.
Just my 2 cents.
From the big dip at 5500 rpm I would check for vacuum leaks or a faulty resonance valve.
I think 240 - 250 (+10 with chip) for totally stock is pretty normal on a Dynojet. On a Mustang 210-220.
Just my 2 cents.
I replaced all the vacuum lines so should not have a leak. I will definitely check the resonance valve. I also notice that my lines are all squiggly and everyone elses are relatively straight... any thoughts??
Rennlist Member
Joined: Aug 2009
Posts: 1,443
Likes: 176
From: Earth
Here is a VRAM motor with Protomotive style turbo kit at 7 PSI on completely stock internals.
I have since rebuilt the motor to upgrade rods to Arrow, DC21 cams and flame ring the heads. I have run the boost at 10.5 PSI and its a monster. I kept the stock CR to retain that sweet off boost throttle response. Need to recheck the dyno numbers.
I have since rebuilt the motor to upgrade rods to Arrow, DC21 cams and flame ring the heads. I have run the boost at 10.5 PSI and its a monster. I kept the stock CR to retain that sweet off boost throttle response. Need to recheck the dyno numbers.
Rennlist Member
Joined: Aug 2009
Posts: 1,443
Likes: 176
From: Earth
It is going to be interesting to see the dyno with the DC21 cams. I suspect they will resolve the HP falling off on the top end. After my last track day a well known 550HP 993tt seems to think I have close to 500HP based on the way I pulled him in the early part of the RPM. I also pulled away from a stage3 993tt at thunderhill down the front straight. I hit 140mph before the braking zone.
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Burning Brakes
Joined: Sep 2004
Posts: 867
Likes: 274
From: NorCal
Ed,
your targa makes some beautiful noises on that dyno run
your targa makes some beautiful noises on that dyno run
What on earth do you mean? 
(I know, I know....it isn't a 993, but it is air-cooled! Fast forward to about 1:00)
http://www.youtube.com/watch?v=GtZ2AjOH358
(I know, I know....it isn't a 993, but it is air-cooled! Fast forward to about 1:00)
http://www.youtube.com/watch?v=GtZ2AjOH358
Instructor
Joined: Feb 2010
Posts: 219
Likes: 1
From: UK
Here's mine. RSFW and clutch on it's way when the current clutch gives out. Not sure if I should go for an RS tranny mount too?
Wayne Schofield of Chipwizards here in the UK did the live remap and managed to eek out an extra 19whp and 16lb/ft torque. The before numbers are with the Dansk 100 cell cat and mufflers fitted.
Wayne Schofield of Chipwizards here in the UK did the live remap and managed to eek out an extra 19whp and 16lb/ft torque. The before numbers are with the Dansk 100 cell cat and mufflers fitted.
