ATTN Duntov7, DYNO RUNS, FINALLY

[c4c5specialist]

Hi there,
Ok, we finally have some baseline dyno runs, to compare.
first one, 02 ZO6, with 3600 miles on the clock. This was totally stock.
This car ran 358 horsepower, and 348 ft lbs of torque. Smooth curve, and very consistant.
Next car, 00 Convertible, with the following mods, BBK 80mm throttle body, 01 intake manifold, Blackwing air filter, X pipe, and Corsa Indy exhaust system.
This car ran 337 horsepower, and 336 ft lbs of torque.
I hope this give people out there a little of what to expect from stock, and modified vehicles.
Oh, and BTW, all numbers are SAE corrected for weather.
YoursinCorvette, c4c5

 

[wagonmaster]

Dyno numbers

Good numbers, especially for the '00! Mine will be there soon. Wonder how much the intake and throttle body added??
Were these mods done the day of the dyno run or things that had been already done to the car? Seems that the more the computer "learns" the "mods", the better the cars get!
Joe

 

[69MyWay]

This is at the rear wheels...right?

 

[c4c5specialist]

Hi there,
The mods on the 00 were done a while back.
We were NOT looking for raw numbers, just increased throttle response, and better off the line acceleration.
I like to follow air flow principles, more than hype, and this is just basic air flow management.
Knock retard at 0
Fuel trim at about 12.9 to 1, which is almost perfect.
And, yes, Chris, at the rear wheels.
NOW< JBC5 is next, with his ZO6 that I reringed a while back with the FLP headers.
What do you say JB???This SAT????
YoursinCorvette, c4c5

 

[EHS]

Just for the record...

I'm the 00 convertible, and c4c5 is a great mechanic/tuner:

Here are some pictures everyone might be interested in:

The dyno graph -- rwhp/rwt.

The facility -- first class and professional.

The car being prepped on an in-ground DynoJet.

First run.

The driver was very good, so was the "passenger" -- monitoring the run on the Tech II.

Checking the parameters on the Tech II after the run

C4c5specialist and the dyno operators review the results.



A very special thanks to c4c5specialist for putting this together. This was by far the most professional dyno operation I've seen. He is obviously the most professional at what he does -- and it shows in the advice he gives, results he achieves, and customer loyalty.

Can't wait for JBsC5 Z06 to hit the dyno, or the track, for that matter!

 

[JBsC5]

Can't wait for JBsC5 Z06 to hit the dyno, or the track, for that matter

Ed, Congratulations on your dyno numbers...Considering your dollar investment in mods and what I've seen on the net in the past , your rwhp on the dyno is about what I would expect to see..Glad its worked out for you. Remember I drove your car. Its very nice.


Heres my logic on my car so you can see where I'm coming from.

I figure I should get about 3K miles on the engine from the re ring..where the car used to use about a quart of oil every 300 miles..New Valves, new piston, new bearings, new rings (1500 miles right now) so that its properly broken in..Just my opinion..that would be a smart way to go..)

Then...when I dyno..I want wideband 02 sensors in place so I can see what the air fuel mixtures are. According to Paul when he completed the re ring.. he said my air/fuel according to tech II was spot on..

Maybe Paul can fill us in on the specifics of what he saw with the tech II on my car..? . I don't remember the numbers and sure wish paul would clue us in here about what they were on my car.. Something about 13.0 to 1 at wot?

I appreciate all that Paul has done for my car..Your a good guy paul...yet

There are those who I also respect, who mod cars on the internet that believe that wideband 02 sensors should be used to properly read and decifer all the data coming from the engines performance. (during the dyno)

Then..if the dyno and the wideband 02 sensors show there is more hp to be found...that LS1 edit whereby you adjust certain parameters of the pcm..

Some cars with mods can pick up 10 to 15 hp..

Cruismissle is one gentlemen I can think of who has picked up that amount after similar mods..then there are others with similiar mods to mine without ls1.edit who turned 370rwhp on 2001 Z's without it. each car seems to be somewhat unique in this respect..

When I hit 3,000 miles on the engine..I'll follow through with my plans and definitely let you know the outcome.

As far as taking it to the track..I've run several hundred passes at englishtown..in my last C5 with the Halltech Tric, PCM upgrade from TTS and I ran consistantly in the 12's at OVER 109 mph..

I guess three seasons down at englishtown was enough of running a street tire automatic in the twelves..which is why I decided to get the Z..

I'm hoping that by next season..I'll have enough miles on the clutch as C4C5 specialist suggested to me before doing burnouts.. how many miles did you suggest to me C4C5? 5,000?

and more importantly enough experience with the stick shift after 10 years of cruising in an automatic.. to have some fun with this stick shift..and get some good times at the track....

Well todays my birthday today guys..so wish me well..43 years old and doing everything I can to enjoy each day..

Paul, you did nice work on my car. I appreciate it...The cars running like a BEAST!

And I haven't done any burnouts yet!!!!

Thanks again..

JB

 

[c4c5specialist]

It is a pleasure to serve both Ed, and JBs Corvettes.
As for the conditions, it is really simply air flow management.
Honestly, I have no bearing on the final numbers.
Personally, I attempt to fine tune a mass produced vehicle, to which has been optimized by the manufacturer. Without the vehicles basics in hand, I could not do what I do.
Now, as for your vehicle, JB, wideband o2s do really nothing more than stock sensors. People feel that they help the Auto tap or the LS1 edit, do the job of deciphering fuel trim data.
Honestly, to optimize fuel trims, the only way to do this, is to monitor directly off the sensors themselves, with a digital storage oscilloscope. Running dual traces, I can monitor both front o2 sensors, to optimize my fuel trims.
However, the following must be realized, WOT fuel trims will always show 800 mvolts, under power enrichment specs, in fuel cell 22.
This is a safe calibration, so that overheating of the pistons and vital internal components does NOT happen.
Only under the most demanding racing conditions, do I utilize this technique, and use the programmers to modify trims.
Under driving conditions, this just isnt necessary.
Jon, you were at 12.9 to 1, which is virtually ideal. 12.8 to 1 is the best air fuel ratio for developing power.
Ed, you were at 12.7, which is also practically ideal.
Personally, JB, you are probably past 02Z06 levels in power and torque, based on what you have, with the FLP headers.
I hope that this helps, c4c5

 

[69MyWay]

Thanks for sharing.

I am starting to get into Dyno stuff now.

Sitting in a car at 6,000 RPM at 120 mph and going nowhere is a STRANGE feeling.

Having the place, the time, and the equipment to monitor, adjust, and calibrate as needed (a dyno) seems to be th key to maximizing performance on anything, especially a EFI system.