99-04 GT wheel horsepower/torque
04-20-2009, 12:48 PM
#11
4th Gear Member
Join Date: Jun 2007
Location: Ohio
Posts: 1,996
Do you guys think the Diablo Predator is a good investment?
Is it relatively easy to use? It seems like a great upgrade to do, and the company makes some decent HP claims - 15-20HP at the wheels. Thats pretty damn good.
By the way Black35th and Purostaff - your exhaust videos make me want a GT Stang even more now! Very nice cars
Is it relatively easy to use? It seems like a great upgrade to do, and the company makes some decent HP claims - 15-20HP at the wheels. Thats pretty damn good.
By the way Black35th and Purostaff - your exhaust videos make me want a GT Stang even more now! Very nice cars
04-20-2009, 12:54 PM
#14
Thread Starter
Join Date: Jul 2008
Posts: 30
Seems like there is a lot to pick from.
Something like the SCT X3/SF3 looks interesting since it has pre-programmed flashes. This seems like a good route to take. Are there any drawbacks or limitations for this kind of flash?
04-20-2009, 01:01 PM
#15
4th Gear Member
Join Date: Jun 2007
Location: Ohio
Posts: 1,996
Well, get one with a custom tune from Brenspeed.com or Americanmuscle.com. Basically you place the order for the Xcal3 and then tell them all the mods you have and they will write you up to 3 custom tunes.
The only drawback is that your not going to get every last bit of HP out of your car without a custom dyno tune. That's why I said get the SCT Xcal3, you can load one of those "canned" tunes that you get from the place of purchase, but later down the line if you add nitrous or a s/c then you wont have to pay for anything except for the dyno time.
The only drawback is that your not going to get every last bit of HP out of your car without a custom dyno tune. That's why I said get the SCT Xcal3, you can load one of those "canned" tunes that you get from the place of purchase, but later down the line if you add nitrous or a s/c then you wont have to pay for anything except for the dyno time.
04-20-2009, 01:35 PM
#16
4th Gear Member
Join Date: Aug 2007
Location: Shelbyville, Indiana
Posts: 1,088
Wow, really? 215?
I know we have to factor in loss of power due to other components but thats pretty low.
I've heard a lot of the Dodge guys complain about the dyno results they were getting on their 5.7 HEMI's. Some were as low as 270 whp. Thats ridiculous for an engine that supposedly makes upwards of 340 HP.
I know we have to factor in loss of power due to other components but thats pretty low.
I've heard a lot of the Dodge guys complain about the dyno results they were getting on their 5.7 HEMI's. Some were as low as 270 whp. Thats ridiculous for an engine that supposedly makes upwards of 340 HP.
Manual transmissions are estimated to have around a 12% parasitic loss: 260x.88=228.8.
I believe that all factory published horsepower ratings are at the block but manufacturers have published low number before.
04-20-2009, 01:45 PM
#17
Thread Starter
Join Date: Jul 2008
Posts: 30
Both are approximately correct for automatic transmissions. The general rule of thumb is that automatics have a 20% parasitic loss. That means only 80% reaches the wheels. Mustang: 260x.80=208 rwhp. Dodge: 340x.80=272.
Manual transmissions are estimated to have around a 12% parasitic loss: 260x.88=228.8.
I believe that all factory published horsepower ratings are at the block but manufacturers have published low number before.
Manual transmissions are estimated to have around a 12% parasitic loss: 260x.88=228.8.
I believe that all factory published horsepower ratings are at the block but manufacturers have published low number before.
Thanks!
04-20-2009, 03:59 PM
#18
5th Gear Member
Join Date: May 2006
Location: south carolina
Posts: 3,534
isnt it sad? my camaro runnin on 7 cyl. still made more power than a stock mustang. they did a lil better with the 3v.
yup yup, i agree with you there.
yup yup, i agree with you there.
04-20-2009, 05:16 PM
#19
2nd Gear Member
Join Date: Jun 2007
Location: St. Louis Mo.
Posts: 235
Ive seen stock gt manuals make 240 at the wheels not 220 becuase what he's saying is that I picked up 30 hp with the simple little bolt ons I added which I know I can squeeze out more on a better day.
04-20-2009, 06:47 PM
#20
3rd Gear Member
Join Date: Dec 2008
Location: CA
Posts: 588
I'm just doing more research because I will be buying a car next year. No matter how many different cars I look at I always seem to be coming back to the Mustang
I was considering a 5.0 but am now strongly considering a modular 4.6 with PI heads (99-04).
The prices are good, they look great and make better power than the 5.0's out of the box. And thats what I'm looking for - a car that will be quick and fun to drive "out of the box". Aside from maybe some intake,headers,exhaust and diablo predator, I will be keeping it stock. Its going to be my daily driver and I won't be going to the track on weekends, no need for supercharging or anything.
I was considering a 5.0 but am now strongly considering a modular 4.6 with PI heads (99-04).
The prices are good, they look great and make better power than the 5.0's out of the box. And thats what I'm looking for - a car that will be quick and fun to drive "out of the box". Aside from maybe some intake,headers,exhaust and diablo predator, I will be keeping it stock. Its going to be my daily driver and I won't be going to the track on weekends, no need for supercharging or anything.