Basline Dyno Results and QUESTIONS!!

[BATMAN]

Did not go the way i thought it would.
The dyno was done at Detroit Speedworks on a Mustang Dyno. Keep in mind the results are WITHOUT BLOWER! its based on the following mods:

MACH PERFORMANCE PCM TUNING
3" BORLA CAT BACK EXHAUST
160 Thermostat
RK SPORT HEADERS
SCC RAM AIR
3.42 GEARS
18" RIMS with 245/40/18 BFGOODRICH GEFORCE Tires
SLP Limited Slip Differential
BMR Handling mods subframe,lower control arms,strut tower brace, pan hard bars (thought i would mention it since it adds weight)


The first pull was done in 3rd Gear... from the looks of it, it hit the limiter again or i am getting so much pinging in the high end that the fuel is being cut off for safety measures...

Anyways i am only getting a max of 169HP and Max Torque of 200 at around 4200-4800 RPMS in 3rd gear...can't remember exactly cause Bill has the dyno results.

The first time i ever did a dyno at speedworks was
before i got the gears changed. I did a dyno with only my ram air/3 inch borla Catback Exhaust and headers oh.. and a 180 thermostat. THat was all...

at that time i had Max 182HP and 188Lbs of Torque.

So from what it looks like, my torque increased which is why i told you guys i could tell a huge difference right from the start, but my HP decreased... NOW... there is one theory as to what is happening. Greg at Detorit Speedworks says it still looks like its hitting the limiter because it maxed out at 110MPH in 3rd Gear
and in Second Gear it maxed out at 4800RPM...

While i was driving the car in normal drive, i know for a fact it went over 110...in fact i buried it past 120... YES i am lucky the car did not loose control and i am lucky i didn't get pulled over, but i had to make sure the limiter was off some how. SO... this is my theory... the GM programmer who did the calibration took off the raised the speed and rev limmiter at normal Drive and forgot the other gears... From what Greg saw on the dyno, he agrees... and Bill after seeing the results feels the same. He is calling the programmer to see if he has made any changes.

I also had premium fuel running in the car...and i am using ACDELCO platinum plugs... not sure if that is making a difference either...cause i didn't have the platinums in when i had the first dyno done at speedworks.

I've also noticed that the car has been hesitating a little. Its not throwing any codes, but the last time it did this, it was cause of the plugs/bad coil pack and a burnt wire that burnt against the headers. The one wire that was burnt last time is showing a lil white again which means it being hit by heat pretty bad. I moved it away from the headers and but i know it needs to be replaced

In any case, i ordered some new Taylor wires and some NGK TR6 plugs. Bill said to try the NGK Tr6 since i couldn't find regular/non platinum plugs from AC DELCO for our cars. Bill perfers the AC Delcos, but he says the NGKs are just as good.

I also plan to throw my MSD Dis4 on and see if that makes any difference as well.

SO... in any case we may have to wait for one more tuning to see why i am getting those dyno results.

In the mean time, i am going to have another dyno done on a DynoMax dyno and see if i get different numbers.

Question....when our automatics are on D does it mean its on overdrive? Usually cars with Overdrive have a O around the D. The reason i am asking is because Greg would not dyno my car in D because he said the overdrive would kick in and overwrite my dyno results and through the numbers off. He insisted on running it in 3rd Gear to get a 1:1 ratio. IS this thought process accurate?!?!

[ September 24, 2002: Message edited by: BATMAN ]</p>

[pvtschultz]

Yes Batman, he is correct. 3rd is a straight 1:1 ratio and 4th (D or OD) is about 0.84 to 1, not quite sure on the specifics. The same is for the M5, fifth is an overdrive gear. As for the older cars being listed as OD or D, they started doing that when over drives were new as an advertising campaign stating that they had the newest and best go fast gadgets...as is the A4. I had the same cruise RPMs in my '79 Impala with a 3 sp as I do with the 4 in my bird, just different rear gears. But anyways...good luck with the huffer. It'll be long before I get one :(

[Neil350]

yes you dyno in D not D eith the 0 around it


if your only dynoing to 4500 rpm dont worry about that hp number cause dude you should have another 1000 rpm to turn the car at minimum and if the guy makes the rev limiter higher you could wind it to 6K


i think you have a Rev limiter kicking in not the speed limiter but a rev limiter cause you could go 120 (did it pull hard in 3rd gear doing 120 or was is going up slow in 4th?)

[ September 24, 2002: Message edited by: Neil350 ]</p>

[Akuma]

no you dyno in 3. There is no D with an O around it. Its D, 3, 2, 1.

[ravenp]

I dont' have a 3 either. 1, 2, D , Dw/O

:D

[ToddBoe]

Cool deal man at least we have some numbers now i plan on takin my car in to get it dynoed as well here very soon not sure when yet and well i guess in my car there is a O with a D then a D 2 1 so i guess the D is equivilant to my 3 then oh well i'll post some results on mine when i get them hopefully this weekend good luck ryan

[HAZ-Matt]

<blockquote>quote:</font><hr>Originally posted by ravenp:
I dont' have a 3 either. 1, 2, D , Dw/O

:D <hr></blockquote>

That's cause you have a Camaro and not a Firebird. Firebirds have 1,2,3,D...

3rd is 1:1 as stated above. D will shift into 4th which is a 0.70:1 ratio on our 4L60E's. But this won't happen at WOT anyway, or so I am told, and even if it did, it shouldn't be until you run out of 3rd gear. I think they just like it to be in 3rd to make sure it doesn't go to 4th. But i don't know exactly what teh dyno operators do, so who knows...

[Ironman24]

Last time I dynoed I unplugged the ABS sensor on the top of the rear axle and also the speedo sensor on the side of the tranny. With both unplugged I was able to hit redline in 4th gear (1:1 manual). Before I tried to unplug the tranny only and the speed limiter kicked in, so you need to unplug both.

Is there anyone with a DynoJet machine in your area?

[Silver2000V6]

I think you can get the 2000 hypertech power programmer that's available now and eliminate (or at least raise it high enough to where it doesn't matter) the speed limiter.

[12secondv6]

OK, first find a real dyno.
Mustang dyno's tend to give a false number, from what I have learned and experienced.
Did you want a best n/a performance?
If yes stop by the auto parts store and pick up ac delco copper plugs, I think that is what I am running.
You will never be able to get a full dyno pull with those gears and an auto due to speed limiter and speedo being off :(
Either contact hypertech or superchips to remove the speed limiter.
3rd gear or AKA drive is the gear you dyno in.
Our cars go 1,2,3 drive.
1 = first gear
2 = second gear
3 = drive (1 to 1 ratio)
d = overdrive
Do not dyno in 2nd because you will get false numbers
Platinum plugs and our cars don't mix.
NGK tr6's are 2 ranges colder, for a blown application it is good, but for n/a numbers it might not be
The wire that has a bit of white on it is burned. That can and will hurt perf.
did you have a wide band done? This is a must to see if your tuning guy is doing it correctly.
Any questions let me know k?

[scottblack]

You must have tuning issues, even when stock. Your torque # is extremely low.

Scott

[scottblack]

Also when you go to dyno the output of the blower, I can only hope that you use a real dyno and not a Mustang dyno. Otherwise you will be advertising 350HP out of something that on a real dyno is only putting out about 270HP.

Scott

[Silver3800V6FBodyKY]

<blockquote>quote:</font><hr>Originally posted by Scott Black:
Also when you go to dyno the output of the blower, I can only hope that you use a real dyno and not a Mustang dyno. Otherwise you will be advertising 350HP out of something that on a real dyno is only putting out about 270HP.

Scott<hr></blockquote>

Mustang dyno numbers are a lot lower than Dynojet's numbers. When I went to dyno on a Mustang Dyno my max power was 150 and Torque was 185 at the wheels, the dyno guy showed me that stock LS1s were dynoing at 255 on that dyno. An LS1 should dyno stock at atleast 295, so with that proportion, my dyno should have been about 177 HP at the wheels.

Really you should use a dynojet if there is one anywhere near you. They are much more accurate, and their formulas for calculations are correct.

[scottblack]

<blockquote>quote:</font><hr>Originally posted by Silver3800V6FBodyKY:


Mustang dyno numbers are a lot lower than Dynojet's numbers.

<hr></blockquote>

Mustang dynos dyno higher. This is common knowledge.

Scott

[Silver3800V6FBodyKY]

<blockquote>quote:</font><hr>Originally posted by Scott Black:


Mustang dynos dyno higher. This is common knowledge.

Scott<hr></blockquote>

A stock LS1 dynoed at 255 HP at the wheels. I dynoed at 150 HP at the wheels with a Borla Catback exhaust, RK Sport Headers, FTRA, Whisper Air Lid, HPP3 tuning.

You do the math.