finally got it tuned. question about horsepower?
Originally Posted by pluto
Really? and that is on 91 octane fuel and through the cat? I don't recall anyone making over 350rwhp with a cat on.
Originally Posted by kyrx7
hey finally got the car tuned. havent picked it up yet. also got new boost gauge,oil press, and egt installed anyway im making 275 rwhp does that seem right? the car has a downpipe midpipe and catback. large entercooler and power fc. also its a automatic so i know they dont make as much power. does this sound like its doing the right hp. he says it spools fast and takes off like a bat out of hell. it was falling on its face before it got tuned.
Thread Starter
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From: kentucky
so at 275 do u guys think i can kill some of these gt's that dont have alot of work done to them. i hate these gear heads. everyone in this town drives mustangs. i just want to eat one up . lol just got to make sure i dont get creamed.
Rotary Freak
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From: fort worth, tx, usa
You're right, but since I didn't tune his car, I couldn't comment as to why his hp was lower than expected. However, the other car that was mentioned low on this thread was tuned by me last week with a cat on so the number aligns with what I would expect and on 91 octane fuel.
back to the orginal poster,
If I have to guess, I would do a drivetrain loss test on the dyno to see how much losses were from the drivetrain. (YES, this can be done). When was the last time the tranny fluid was replaced?
honestly, using 20% drivetrain loss for auto tranny and assuming that the engine was making around 350Bhp at 13psi, it comes up to 280rwhp. This aligns to what I was expecting for an auto car.
Same car using a manual tranny (12-15% loss) would be 297rwhp-308rwhp. It sounds to me that the car was making what was expected.
back to the orginal poster,
If I have to guess, I would do a drivetrain loss test on the dyno to see how much losses were from the drivetrain. (YES, this can be done). When was the last time the tranny fluid was replaced?
honestly, using 20% drivetrain loss for auto tranny and assuming that the engine was making around 350Bhp at 13psi, it comes up to 280rwhp. This aligns to what I was expecting for an auto car.
Same car using a manual tranny (12-15% loss) would be 297rwhp-308rwhp. It sounds to me that the car was making what was expected.
Originally Posted by 93VRTouring
threadstarter doesn't have a cat.
Last edited by pluto; Nov 2, 2006 at 05:05 PM.
50HP isn't a HUGE difference... my main point is i think some people are smoking some of the good stuff.
you can gain negligable gains from fine tuning but the disadvantages = severely shortened engine lifespan. is it possible to get 320 out of it? probably. will it last more than a year doing it? probably not.
pump gas is not as exact as the octane readings make it out to be, it only takes a semi dilluted tank of gas to pop a motor.
you can gain negligable gains from fine tuning but the disadvantages = severely shortened engine lifespan. is it possible to get 320 out of it? probably. will it last more than a year doing it? probably not.
pump gas is not as exact as the octane readings make it out to be, it only takes a semi dilluted tank of gas to pop a motor.
Last edited by RotaryEvolution; Nov 3, 2006 at 12:34 AM.
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From: FL-->NJ/NYC again!
Originally Posted by Karack
pump gas is not as exact as the octane readings make it out to be, it only takes a semi dilluted tank of gas to pop a motor.
Thread Starter
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From: kentucky
had a friend drive it home and i road with him. its alot faster and runs really smooth. im happy with it 4 now. until someone blows my doors off. thanks for the help and input you guys have been great
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