My TT numbers...why is the torque so low?
Originally Posted by Ted B
The drivetrain losses cannot be anchored to a flat percentage of engine power. If we increase engine power by 100bhp, the power required to turn the drivetrain remains relatively unchanged. Therefore that 20% figure becomes smaller as engine power increases, which means a flat percentage cannot be applied arbitrarily.
As for the Dynojet, it's primary fault is that being an inertia load device, it cannot reproduce actual street loading. The Mustang unit proved more accurate in a published test about 2 years ago, but that's another subject for another thread . . .
Just FYI.
As for the Dynojet, it's primary fault is that being an inertia load device, it cannot reproduce actual street loading. The Mustang unit proved more accurate in a published test about 2 years ago, but that's another subject for another thread . . .
Just FYI.
Dirvetrain losses consist of both viscous and frictional losses. Most of the friction comes from the bearing and wear surface contact (gear set interaction, shaft support bearings, etc). Keep in mind, that as load on frictional surfaces increase, generally, the amount of friction increases as well. So as cars increase in power, they increase torque, and thus increase the loading on these contact surfaces. This is why drivetrain looses increase with increasing engine output.
Now, no-one can say "its 20%". The effects here are highly nonlinear and depend very much on operating conditions. But I would also challenge the idea that the drivetrain absorbs "x" torque and thats it.
Anyways, that is my argument. Please reply if I am wrong.
Originally Posted by Mercenary3
The effects here are highly nonlinear and depend very much on operating conditions.
Originally Posted by Mercenary3
But I would also challenge the idea that the drivetrain absorbs "x" torque and thats it.
Originally Posted by 03evo**
mark i ahve a car iwt 264s it was tuned by u at first n it was at 21 psi and my numbers were 298 torqe and 313 whp then i went to al and got dyno flashed and put down 325 torque and 335 awhp at 21 and couldnt tune my boost up to 23 psi due to bad spark plugs and then should be puttin down 345 awhp n dunno bout the torqe
l8r)
Originally Posted by Ted B
Absolutely correct, and that fact alone supports my point. For the '20%' or any other static figure to work across the board, the drivetrain losses must rise in direct proportion to a power increase, and that dog doesn't hunt.
I didn't propose such an idea. It certainly takes an increase in power to accelerate the drivetrain itself at an increasingly faster rate.
I didn't propose such an idea. It certainly takes an increase in power to accelerate the drivetrain itself at an increasingly faster rate.
Evolving Member
Joined: Jun 2005
Posts: 189
Likes: 0
From: new jersey
I Got 350 Whp And 298 Awtq At Tt And Was Happy With The Tune I Ran A 12.2 At 109 Only Prob Was After I Changed Plugs From Stock To Bpr7es I Kept Getting A Buck At 6200 Rpm And A Cel Of Overboost Condition. I Have Not Changed The Plugs Back Yet But I Reall Dont Drive That Hard That Often Unless Someone Wants To Get Beat On The Street.. Just My 2 Cents. And By The Way I Cant Wait To Get Meth Inj And Act Clutch From Tt With That Free Retune. Have A Great Time With Your Cars... Evo Drivers Are So Damn Picky.... Ease Off And Drive Your Cars Thats What Its All About Anyway
Originally Posted by BoostedHellride
4 Times, I paid in full for the 1st one, the 2nd one was free, 3rd was $200 and the clutch went, and then I had to pay another $150 for the 4th after I got my clutch fixed. Pricing was never an issue and I am thankful.
I agree, great service, but I am not satisifed with the performance of my ride. Evo's WITHOUT cams pull on my 272 camed Evo, 4 flashes, a consistant 108MPH trap since I had the cams installed. Hell I went last week with 94 octane and sub 70 Degree weather at nite, I ran a 12.6 at 108 with 272's I may not be a DSM/Evo expert but I know when the car is lacking up top, and it is.
I GUARANTEE if I put my car on your dyno again, it'll be at around 300WHP, it has done this 4 times, I'm just wondering why it happens?
Again I appreciate the work you do on my car, the installs are top notch and the quality of your work is NEVER questionable. I would rather have you work on it then any Mitsu Tech and I have seen you building motors. I know you know your stuff.
But when an Evo with nothing more then a Turbo back and a boost controller is PULLING ME FROM A ROLL, that leaves something to be desired, especially with HKS 272 cams.
How is it knocking? I am not sure, If I knew I'd be a tuner
A lot of people believe it was an agressive tune on the Dyno and when you hit the street with a different load it just knocks and regresses. But I get on it, it pulls great down low, up top it just doesn't, it is obvious. It makes noise and goes nowhere. I had an Issue pulling on a Stock 1994 LT1 Camaro in fact. I even purchased a Boost leak tester and tried out 25PSI, nothing.
IDK, I mean when I came back those times power was WAY off, and then after 1 run, it was back up again. When I hit the street power goes down. I don't think that my driving skills would net me a poor trap. I bet I could run a 20 @ 108MPH, that is always consistent with whp IMHO. Thanks for your reply
I agree, great service, but I am not satisifed with the performance of my ride. Evo's WITHOUT cams pull on my 272 camed Evo, 4 flashes, a consistant 108MPH trap since I had the cams installed. Hell I went last week with 94 octane and sub 70 Degree weather at nite, I ran a 12.6 at 108 with 272's I may not be a DSM/Evo expert but I know when the car is lacking up top, and it is.
I GUARANTEE if I put my car on your dyno again, it'll be at around 300WHP, it has done this 4 times, I'm just wondering why it happens?
Again I appreciate the work you do on my car, the installs are top notch and the quality of your work is NEVER questionable. I would rather have you work on it then any Mitsu Tech and I have seen you building motors. I know you know your stuff.
But when an Evo with nothing more then a Turbo back and a boost controller is PULLING ME FROM A ROLL, that leaves something to be desired, especially with HKS 272 cams.
How is it knocking? I am not sure, If I knew I'd be a tuner
A lot of people believe it was an agressive tune on the Dyno and when you hit the street with a different load it just knocks and regresses. But I get on it, it pulls great down low, up top it just doesn't, it is obvious. It makes noise and goes nowhere. I had an Issue pulling on a Stock 1994 LT1 Camaro in fact. I even purchased a Boost leak tester and tried out 25PSI, nothing. IDK, I mean when I came back those times power was WAY off, and then after 1 run, it was back up again. When I hit the street power goes down. I don't think that my driving skills would net me a poor trap. I bet I could run a 20 @ 108MPH, that is always consistent with whp IMHO. Thanks for your reply
You seemed to know it was knocking from your original posts. Now that we know it isnt ..we can continue. I will pull up your charge history today, but i know for a fact you were not charged in full ... 4x's and you've had free tunes before. I've always helped you out in the past and i find it funny you make up new screen names and post bad things about me / turbotrix and you dont think i'd know who you are. You dont even sign a name to your posts. Your car didnt loose 50 whp btw.... It lost 15, big diff. Your running 12.6 and you cant drive .. What are your 330 times ? 60' times ? 5.5 ?
Many people i've tuned with your exact same mods, run 11's or low 12's. Guess i just cant tune your car right? And im sure from who you loose to on the street is a good gauge on how your car is tuned.. I look forward to your next screen name and new posts
Mark
Turbotrix
Originally Posted by BoostedHellride
That is SImple, he has an 03 with a 9.8 housing, it will spike harder, hell I made 370+++ On a pump gas spike, doesn't mean I made 370 FP's for more then a second. Your torque is probably broader and that is the name of the game.
Mark
turbotrix
Originally Posted by TurbotrixRacing
Everyone might know matt as his other screen name umiami80
Ohhhh account disabled ..
Mark
Turbotrix
Ohhhh account disabled ..
Mark
Turbotrix
Yeah we knew that . hehehe
Originally Posted by 03evo**
yes pruven gave me higher results with my engine running better as weell..
l8r)
Originally Posted by Ludikraut
That's what I thought ... and you are aware of the fact that pruven's dyno is one of the highest reading, if not in fact the highest reading dyno in the US? IMO you guys need to do your homework a little better...
l8r)
l8r)
He said he dyno'd before Al made any changes and it was within the same ballpark with what he dyno'd at TT.
Originally Posted by Ludikraut
That's what I thought ... and you are aware of the fact that pruven's dyno is one of the highest reading, if not in fact the highest reading dyno in the US? IMO you guys need to do your homework a little better...
l8r)
l8r)
My data shows that the Puven dyno is dead on with other smilar dyno jets
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