Question about Mustang Dyno's

[Dave King]

Hello all
Long time no talk. I was hoping to get feedback from any dyno shop and or anyone with experience in regards to a Mustang dyno about some problems that I was experiencing. A good friend of mine has a 02 Z06 with aftermarket heads and cams and he asked me to tune it for him since the only local HP tuner dealer went out of business. So I got the tune in very close for him and then we hit a local Mustang dyno in Pittsburgh.
I'll be the first to admit that I don't know anything about Mustang dynos so I need to get as much info as I possibily can.
When the dyno session started the operator did what he called a load test. He said he needed to take the car to 6000 rpms. We then proceeded to make our first pull. I asked the dyno operator to make a pull to 6000 rpms because I wanted to sneak up on it. I datalogged the pass and it said the pull went to 7000 rpms. He told us that our tach was off. I told him that we've dynoed the car on a dynojet before and it matched perfect plus new Corvettes don't have the problems the stock Mustang tachs do.
So the dyno operator proceeded to change settings on the mustang dyno so that his RPM's would match up with ours. The dyno operator never tapped into the tach lead like they do on dyno jets. He got RPM's via the reading of the wheels only.
As it turned out this mustang dyno showed that the car was making peak power at 7050 rpms where it was really 6450. The dyno operator blames the fact that he had to trick his software to match our rpms.
The questions I have are...........Is it common practice to not use a tach lead on a Mustang dyno? If not how accurate can the RPM's be? Shouldn't a Mustang Dyno's rpms match up against a dyno jet. I don't care about dyno numbers for hp or torque because they are 2 entirely different things but I was hoping to get feedback from all Mustang Dyno experts.
Your feedback is very appreciated.
Thanks
Dave King

[383taman]

Well i can tell u if it was where im thinking it was dont believe any thing he tells u but he should have used a balancer lead with tape.but i think this guy a/f meter works at least i hope lol

[Viper_ed]

I'm going to make a wild guess and say this was at A.S.A.P. and the "Genious Ed" there was the the dyno operator.

[Blackcobraconv]

You might want to call Mike Bowen at Powerhouse near Erie. His website is: www.powerhouse411.com/. He has a Mustang Dyno and is great guy, very knowledgable.

[383taman]

I never said that.

I'm going to make a wild guess and say this was at A.S.A.P. and the "Genious Ed" there was the the dyno operator.

[Wolfpack Speed]

Hello all
Long time no talk. I was hoping to get feedback from any dyno shop and or anyone with experience in regards to a Mustang dyno about some problems that I was experiencing. A good friend of mine has a 02 Z06 with aftermarket heads and cams and he asked me to tune it for him since the only local HP tuner dealer went out of business. So I got the tune in very close for him and then we hit a local Mustang dyno in Pittsburgh.
I'll be the first to admit that I don't know anything about Mustang dynos so I need to get as much info as I possibily can.
When the dyno session started the operator did what he called a load test. He said he needed to take the car to 6000 rpms. We then proceeded to make our first pull. I asked the dyno operator to make a pull to 6000 rpms because I wanted to sneak up on it. I datalogged the pass and it said the pull went to 7000 rpms. He told us that our tach was off. I told him that we've dynoed the car on a dynojet before and it matched perfect plus new Corvettes don't have the problems the stock Mustang tachs do.
So the dyno operator proceeded to change settings on the mustang dyno so that his RPM's would match up with ours. The dyno operator never tapped into the tach lead like they do on dyno jets. He got RPM's via the reading of the wheels only.
As it turned out this mustang dyno showed that the car was making peak power at 7050 rpms where it was really 6450. The dyno operator blames the fact that he had to trick his software to match our rpms.
The questions I have are...........Is it common practice to not use a tach lead on a Mustang dyno? If not how accurate can the RPM's be? Shouldn't a Mustang Dyno's rpms match up against a dyno jet. I don't care about dyno numbers for hp or torque because they are 2 entirely different things but I was hoping to get feedback from all Mustang Dyno experts.
Your feedback is very appreciated.
Thanks
Dave King

Dave,

try to get in touch with Jon L, he tunes on a mustang dyno quite often.

are you a daddy yet?????

Mike

[blkp42e]

I'm going to make a wild guess and say this was at A.S.A.P. and the "Genious Ed" there was the the dyno operator.

you stole my post!!!

[Dave King]

Hey Mike

Thanks for all the replies. This was done at Speed Nation on Route 88. My friends was skeptical about making power all the way to 7050 and so was I so he contacted the heads/cam vendor and they said no way should it make power past 6400. So we took it to a dynojet faculty in Youngwood and peak power was exactly at 6450 and our rpms matched that particular dyno's. When we went back to guy at Speed Nation he is trying to blame it on the car. So I'm trying to get as much facts as possible. He might try to get his money back from Speed Nation because it was pretty much a waste of money. At $100 hour you kinda expect accurate data such as Peak RPM's.

[Dave King]

Oh and to answer your question Mike yes I'm a proud dad.

Janelle Marie King born 4-21-07.

[u1arunit]

Congrats Dave!!

[Dave King]

Thanks Mark

How's the Terminator? Any changes to the car or track time?

[03 OW SVT]

Congrats Dave!!

X2...She is adorable

[gmkillr]

Congrats on the little one!!!

[u1arunit]

Thanks Mark

How's the Terminator? Any changes to the car or track time?

I did re-dyno with the car at 20.5-21# of boost and race tune that I made and got the numbers in my sig.

I plan on going to the track again when the weather cools down. I have not raced since the rental last fall.

[One Sweet Day]

Oh and to answer your question Mike yes I'm a proud dad.

Janelle Marie King born 4-21-07.

CONGRATS!

[Wolfpack Speed]

Oh and to answer your question Mike yes I'm a proud dad.

Janelle Marie King born 4-21-07.

congrats Dave!!!! i know it was a bumpy road for you and the wife, im glad everything turned out ok

[Dave King]

Thanks for comments everyone.

Anyone going to the track in the next couple weeks? I know the guy with the Vette is going out real soon.


Dave