Dyno'd today - CEG Archives

Well here is why I say that:

1) Most stock SVTs dyno in the 165ish range. A cat back shouldnt have you too far away from that.
2) Mustang dynos read lower compared to Dynojet (more of a standard around here)
3) Your HP seems too high.

So with that I say its corrected because 175whp on a Mustang dyno would take a lot more than a catback. Also, trying to correct HP numbers across dynos is funky, and shouldnt be done because their is no standard, its just close guesses to what the conversion might be. I think they might have skewed your numbers in trying to give you HP numbers to compare to DynoJet numbers. Either you have a freak or the numbers got skewed somehow.

FWIW, my SVT with intake, headers, catback, etc. (no tuning) put down 175whp on a DynoJet so if you can match that with just a catback, well, I would cry.

And sorry if thats a crappy explanation, Im unable to type much right now b/c my fingers are still numb from having some skin removed from my hand this morning.

Originally posted by KingpinSVT:

FWIW, my SVT with intake, headers, catback, etc. (no tuning) put down 175whp on a DynoJet so if you can match that with just a catback, well, I would cry.

It is a lot for a Mustang dyno. BTW there is someone on this board who made 175whp with just an intake and Magnaflow resonator on this board. I made 170whp with an intake and exhaust.

Originally posted by rkneeshaw3.0:
factory freak or the numbers are being corrected. because I think those are outstanding numbers for a SVT with just cat-back.

I made 175.3 and 155.x with only a KKM and a removed resonator in 2002. I'm assuming it was run on a mustang dyno, as the shop we were at was a mustang only shop.

Originally posted by TGO:
I'm assuming it was run on a mustang dyno, as the shop we were at was a mustang only shop.

LOL, it has nothing to do with the type of car being worked on. Its a brand of dyno.

i know, but i figure crazy horse racing would have a mustang dyno before anything else.

I pulled 181 on a dynojet with an intake and removed resonator.

Originally posted by TodrasByAssociation:
I pulled 181 on a dynojet with an intake and removed resonator.

And SAFC 2?

I was just looking over my dynos done on a dynojet. With a std correction factor I had 182 hp and 156 tq. With a SAE correction I get 176 hp 151 tq. My Air fuel is down at 10. If I had a decent air fuel I think I could probably make decent numbers on a mustang dyno also. I really don't have many mods. Optimized y pipe and tb, magnaflow center resonator and a K&N. I should really get my car tuned.

i dont remember the exact numbers but my car pulled about 176HP with the resonator removed and a K&N.
and that was not a mustang dyno.

Damn, I must have a dog

...or just a different dyno.

I've seen dynos vary by as much as 10% because there is NO SET STANDARD used in calibrating them. Some dynos have shorter rulers then others so even comparing dynojet to dynojet is only getting in a close ball park. Unless it is the same dyno it is not going to be an very accurate comparison.

A dyno is for tuning and not bench racing. When used like it should be it is an excellent tool. This is the main reason why Mustang dynos are so popular with tuners. They give a more consistent reading and a more accurate representation of power at any given throttle position and rpm point.

Originally posted by DemonSVT:
This is the main reason why Mustang dynos are so popular with tuners. They give a more consistent reading and a more accurate representation of power at any given throttle position and rpm point.

They just make you cry when you see the #'s

+ isnt his dyno show peak tq real low in the rpm range? I thought tours peak tq was close to 6k not 2,850(before imrc opens)

Originally posted by dubkatz:
+ isnt his dyno show peak tq real low in the rpm range? I thought tours peak tq was close to 6k not 2,850(before imrc opens)

The IMRC creates that early torque spike by the low speed, high density air from on using just the short runners. (i.e. restriction) It's also why the stock engine falls flat on it's face at 3000rpm if they don't open.

My first dyno showed 168 FWTQ below IMRC and 164 FWTQ above IMRC. (not stock of course) The only real powerband is above the IMRC so the other higher peak value was really just a pointless number.

Originally posted by DemonSVT:

Originally posted by dubkatz:
+ isnt his dyno show peak tq real low in the rpm range? I thought tours peak tq was close to 6k not 2,850(before imrc opens)

The IMRC creates that early torque spike by the low speed, high density air from on using just the short runners. (i.e. restriction) It's also why the stock engine falls flat on it's face at 3000rpm if they don't open.

My first dyno showed 168 FWTQ below IMRC and 164 FWTQ above IMRC. (not stock of course) The only real powerband is above the IMRC so the other higher peak value was really just a pointless number.

Ahh yes i see his next tq peak is at 5,600 and its onlt 1tq lower.

Originally posted by KingpinSVT:
Well here is why I say that:

1) Most stock SVTs dyno in the 165ish range. A cat back shouldnt have you too far away from that.
2) Mustang dynos read lower compared to Dynojet (more of a standard around here)
3) Your HP seems too high.

So with that I say its corrected because 175whp on a Mustang dyno would take a lot more than a catback. Also, trying to correct HP numbers across dynos is funky, and shouldnt be done because their is no standard, its just close guesses to what the conversion might be. I think they might have skewed your numbers in trying to give you HP numbers to compare to DynoJet numbers. Either you have a freak or the numbers got skewed somehow.

FWIW, my SVT with intake, headers, catback, etc. (no tuning) put down 175whp on a DynoJet so if you can match that with just a catback, well, I would cry.

And sorry if thats a crappy explanation, Im unable to type much right now b/c my fingers are still numb from having some skin removed from my hand this morning.

We used the same Dyno/shop for our dyno day last year. I'm 99% sure that Mt. Airy Total Performance http://www.totalperf.com/ is NOT adjusting the number as they are VERY anti Dynojet. As far as they are concerned the Dynojet is a Dreamjet that produces inflated numbers. http://www.totalperf.com/dyno.html They could care less about Dynojet numbers, so why convert to false information. They are in the business of building and tuning racecars...not providing false information for show and tell; they use their numbers not false adjusted numbers. What purpose would that serve

Mike's numbers are very close to my numbers on the same Mustang Dyno he used Dyno-Day link . My pulls were cut short due to my factory rev limiter shutting me down before Max power was achieved. My mods were at the time Bassani Cat-Back, MSDS Headers & Y-pipe, Max-Flow Extrude Honed UIM and K&N RU-3530. Mustang Dyno: 172hp/145ft/lb Not knowing how much more I would have gained I was told there was more to be had based on what they saw.

Yes, Mike's numbers do seem a little high for his mods and compared to my baseline pulls before the headers as well but there have been know to be some freak's out there for sure. So I say excellent numbers Mike...congrats

Originally posted by DemonSVT:

My first dyno...

*grasp chest as heart attack ensues*

Greg and a dyno!?! :-P

Originally posted by svtavino:
I should really get my car tuned.

I'm sorry, but I've always wanted to know what are the exact procedures that take place in "dyno tuning" one's engine. Also, how big are the gains (hp/tq) expected to be from "dyno tuning?"

Originally posted by Ike:

Originally posted by svtavino:
I should really get my car tuned.

I'm sorry, but I've always wanted to know what are the exact procedures that take place in "dyno tuning" one's engine. Also, how big are the gains (hp/tq) expected to be from "dyno tuning?"

apparently not much (2-5hp), your better off with a chip.

Originally posted by Tourige:

Originally posted by Ike:

Originally posted by svtavino:
I should really get my car tuned.

I'm sorry, but I've always wanted to know what are the exact procedures that take place in "dyno tuning" one's engine. Also, how big are the gains (hp/tq) expected to be from "dyno tuning?"

apparently not much (2-5hp), your better off with a chip.

A mail order chip is better than a dyno tune?? Is that what your saying?

Originally posted by Arhethia:

Originally posted by Tourige:

Originally posted by Ike:

Originally posted by svtavino:
I should really get my car tuned.

I'm sorry, but I've always wanted to know what are the exact procedures that take place in "dyno tuning" one's engine. Also, how big are the gains (hp/tq) expected to be from "dyno tuning?"

apparently not much (2-5hp), your better off with a chip.

A mail order chip is better than a dyno tune?? Is that what your saying?

I hope not. Usually a dyno tune involves adjusting most of the engine's parameters for performance including A/F ratio, spark timing, MAF functions, etc. Some tuners will take it further and drive it around on the street to adjust any other issues.

However, some mail order tunes are very good. There have been people on the CEG who have reptorted good gains (10+whp) with mail order tunes.

Y2KSVT got about 10whp / 10lb/ft from tuning.

Originally posted by KingpinSVT:
Y2KSVT got about 10whp / 10lb/ft from tuning.

With what mods? Ill have headers, y-pipe, intake, and catback when i do my dyno and i was told that dyno-tuning wouldent do much of anything.

Wow this thread has gone bad...Y2kSVT had a dyno tune with his XCAL2. If anyone says a mail order tune is better than a dyno tune...

The HP gains will be diff for everyone dependent on the mods already done for the car. There isn't some magic hp number with a chip.

Originally posted by MapOfTaziFoShoâ�??¢:
Wow this thread has gone bad...Y2kSVT had a dyno tune with his XCAL2. If anyone says a mail order tune is better than a dyno tune...
The HP gains will be diff for everyone dependent on the mods already done for the car. There isn't some magic hp number with a chip.

Couldn't agree with u more!!

Doesn't Y2K have a 3.0? 10 hp yeah and that was not on a mail order chip.

I say on average 8-9 hp on a 2.5 with an aftermarket tune after all the bolt on upgrades. Headers, maf, y-pipe, cat-back exhaust, air intake. That is tuned while on the dyno, mail order i gues a 5hp gain average.

5-6hp gain for a stock upgrade tune.

Mail order is hit or miss. Has been said a million times before.

So then what happens when you get the chip and it's a miss? Do you just send it back and they'll try to re-program it accordingly?

Originally posted by Ike:
So then what happens when you get the chip and it's a miss? Do you just send it back and they'll try to re-program it accordingly?

Mail tag, chip tag...whatever you wanna call it

Thanks Pete, but you're misinformed. My Xcal2 was sent to me through...... the mail. I did get the car onto the dyno immediately, to show the gains from the Xcal2, and see if we could get a dyno from someone who bought their Xcal2 through Wayne @ HypIllAuto. I was extremely happy with the tunes I received from Brent @ Brenspeed, hence my excitement to start a Group Buy for CEG. I know that a few other people have gone through Brenspeed for their Xcal2's and PRP, and have been very happy.

Mark

Originally posted by Ike:
So then what happens when you get the chip and it's a miss? Do you just send it back and they'll try to re-program it accordingly?

well i take what u get.

It is what the programmers advance in the chip (air,Fuel,spark) that makes the car adjust. Either it will perform alittle better or alot better!! So it depends on who is programing the chip for u.

Like y2k said brenspeed did his mail order chip. It turned out great. So that being said he has proof that brenspeed has 1 under there belt for our cars, as a good chip tuner.

Hi! My name is DeWayne Logan from Logan Motorsports, and we are an SCT dealer. I was turned on to this site by the guys over at newcougar.org.

I noticed that there is some confusion about how dynos read and how they are calibrated. Taking power numbers without a grain of salt is dangerous, especially when you speak of Mustang Dynos. Mustang dynos can be calibrated 2 different ways, and you should realize that they are calibrated VERY often, at least they should be. Dynojet's also need to be calibrated, but only every 4-6 months, depending on usage. Some shops don't follow this very well however, and as a result skewed readings aren't as uncommon as you would think. If I were you I'd always ask to know when was the last time the dyno was calibrated, and also what correction factor was used. There is no excuse to still be using the old "std" correction factor, as everyone in the industry uses SAE at this point. You need to understand that dynos are just a tool, and that is why the tool is only as good as the person using it. Arguing over power numbers is trivial, it's power gains that are important to see.

Now, as for dyno tuning adding power. It cannot, and should not, be said how much power dyno tuning will add. There is no rule, but you need to understand that the way your car performs is more than just numbers. A good dyno tune will not only make sure the car is making power, but that it is doing so safely and efficiently. Dyno tuning quickens throttle response, and very often improves gas mileage as well. Dyno tuning is ALWAYS better than a mail order tune, because it is specifically tailored to your car, and only your car. It should be noted that automatic cars will seem to benefit more from either a mail order tune or a dyno tune, because the tuner should (a good tuner at least) optimize the transmission for maximum performance. This includes shift points, shift firmness, etc.

I didn't really mean to just jump in this thread, but if you have more questions about dynos just PM me. I'm not the be all end all for dyno information, but I have used them and I do own one, so I know quite a bit.

Originally posted by Arhethia:

Originally posted by MapOfTaziFoShoâ�??¢:
Wow this thread has gone bad...Y2kSVT had a dyno tune with his XCAL2. If anyone says a mail order tune is better than a dyno tune...
The HP gains will be diff for everyone dependent on the mods already done for the car. There isn't some magic hp number with a chip.

Couldn't agree with u more!!

Doesn't Y2K have a 3.0? 10 hp yeah and that was not on a mail order chip.

I say on average 8-9 hp on a 2.5 with an aftermarket tune after all the bolt on upgrades. Headers, maf, y-pipe, cat-back exhaust, air intake. That is tuned while on the dyno, mail order i gues a 5hp gain average.

5-6hp gain for a stock upgrade tune.

Mail order is hit or miss. Has been said a million times before.

No way to know with a mail order. I picked up 20 just playing with open exhaust and air fuel on my NA 3L.
In street trim with just an emanage I was able to make 10HP gain by tuning the A/F. With timing control I could have done even better.

You gotta remember that how well your car does is going to be 50% attention to little details in both the build up and the tune! Hand porting, port matching, valve size calculations, age of the components, grade of fuel, etc.

I haven't called Mt. Airy motors to see if they use a correction factor or not, but I will do that tomorrow.

Someone asked about calibration, They calibrated the dyno right before my pulls. I was the first one of the morning that day.

And one other mod I forgot about is an open element filter.

As for other pulls to re-verify my numbers, ain't gonna happen. The car is back in SC getting repainted. I spent the last week and a half at home on my dad's body shop getting it ready for paint.