Smokin' X-press

I just got the Dyno results back. They used a all wheel drive Mustang Dyno. The weather was around 65F.

HP 172.9 @ 6000RPM
Tq 187.0 @ 4500RPM

I have the Stillen Hi-Flow, Cattman Ypipe and Greddy Evo. I also got the spark plugs changed (NGK Platinum) when the dealer did the service about 2weeks back. I'm disappointed as I was thinking it might be in the 190HP range. Could you guys please let me know if this is what I should be expecting or is there sth wrong. Also, I never dynoed it when it was stock so I'm not really sure. But with either a 15 -20% loss the HP should have been a lot more. Or is it because the Mustang Dyno gives a lot lower numbers. The guys at the shop were really impressed with the torque curve as it came on strong at 2100RPM (around 165ftlb) and went strong till 4500RPM.

Let me know what you guys think.

UMD_MaxSE

iTrader: (1)

what year and what tranny? Mustang dyno will generally produce lower numbers than a dynojet anyways...

Smokin' X-press

it's a 2001 5spd...sorry didn't mention it earlier

Maximam

Get a dynojet measurement. You should see 190+ on that.

Smokin' X-press

What's the difference b/w Dynojet and Mustang and why would the Dynojet give higher numbers than the Mustang? I was told by the shop that the Mustang is more accurate....

Maximam

Well lets see.

If you have 222hp at the flywheel and have a 20% (on the high side) loss that would be 177.6 whp.

If you went dynojet and got a 190whp reading that would be (approx) 15% (more like it) loss.

Now you are slightly modded so 230 flywheel hp would be a low estimate. I bet a dynojet would read between 190-195whp.

BTW what is your 1/4 mile time? Is it hp figures your after or real world performance?.......JK

Get a a/f reading dynojet done if you want that printout that says 190+whp.

Smokin' X-press

Haven't had a chance to test the 1/4 mile. Hopefully will do it this summer.

Maximam

Do it while it is cooler out, summer temps will kill your times.

TonyCooper

You running stock rims / tires ? I've seen 15 hp differences in dyno runs just by changing tires and rims. Heavier setups will lower your HP reading on the dyno.

irvine78

iTrader: (2)

dang...that is low...

MaxVader

Yea something is wrong, Autos don't even dyno that low.

Maxman2000

iTrader: (5)

I'd be diapponte if I were you too. 179?!?!I'd expect more if I had those mods to. You know, royal purple oil adds a few more ponies, like 5. If you put that stuff in, you'll save a lot of hp and your engines life will increase. Next oil change to the engine and tranny I'm doin royal purple.

Smokin' X-press

MaxVader - Can you please let me know which Dyno you used. You're sig is showing 180+HP. So was it a Dynojet or

Smokin' X-press

MaxVader - Can you please let me know which Dyno you used. You're sig is showing 180+HP. So was it a Dynojet or a Mustang Dyno.

Here's a link to see the difference b/w the two

http://www.activeautowerke.com/dyno/...gVsDynojet.asp

I'm confused as the car doesn't even feel slow. I know I was able to keep up with the WRX at track. So i'm not sure what is going on.

MaxVader

It was a DynoJet.

wantasupra3

Ahhhh...its only a dyno, its all about street and track perfomance!

Newman

iTrader: (3)

no offense to either of you personally but both of these statements seem ridiculous to me.

i agree that heavier/larger rim and tire combos can have some effect on a dyno but no way is it anywhere near 15 HP. i'd say something like that would only be accountable for about 5 HP at the most. i dont doubt that maybe you saw a 15 HP difference with one set of rims and tires and a different set but all 15 HP was definitely not related to the switch. and since we're talking about a dyno we're talking about 15 HP to the wheels or about 20 HP at the crank. wheels will not make that much of a difference.

and claiming that royal purple adds 5 HP is like claiming that a K&N filter adds 5 HP. while there may be a miniscule gain is it nothing you will ever be able to feel or even measure with a dyno. (since dynos give varying numbers as it is with no changes to the setup at all)

Lumbee1

HotRod TV did a convention fluid to synthetic fluid swap with dynos before and after. There was a gain of 10 to 11 HP. This was on an older model car in excellent condition.

irvine78

iTrader: (2)

the number is definitely in the 4th gen territory...

i had my car dynoed on a dynojet as well with Stillen intake, Stillen Y-pipe, GReddy Evo, Underdrive pulley and a set of B&M fuel pressure regulators...i pushed 205hp and 201tq on the roller...

Smokin' X-press

Do you know what gear they dynoed in? My dyno was done in 4th gear as the shop said that's the closes to 1:1. They said they tried both 3 and 4th gear until they found the right ratio. Either ways, as I had said before it's hard to believe that i'm only pushing 172HP as I can feel that the car pulls like crazy. I think i'll try and find a dynojet just to see what the numbers are. Can you guys suggest anything that I should do to see if there anything wrong? The spark plugs were changed about a month and a half back.

The other thing was that about a week and half after the dyno I found out that the front bearings and hubs were totally screwed. I could literally pull the right wheel off with the lugs on if I tried to. So do u guys think that problem could have caused lower numbers given that there may be added pressure on the wheels to turn or sth?

MaxVader

I dynoed in 2nd gear 5 times. dose that matter?????