True Duals Performance...Facts...
4th Gear Member
Joined: Feb 2007
Posts: 1,028
From: Green Mt State
RE: True Duals Performance...Facts...
ORIGINAL: p51mstg
SOHC, do you think your experience was a result of a tune, or the dual exhaust? Or both?
ORIGINAL: SOHCman
That is the second thing I noticed when I put my duals on... I can actually COAST now! (The first thing was my "hesitation after long cruise" was gone.)
Still, 7-8 seconds after you take your foot off the gas, the car does still decellerate automatically... but only ONCE!
Used to do that EVERY 7-8 seconds after you take your foot off the gas.
My average mileage went up by about 2 MPG because of this.
On one hill near my place, keeping the throttle steady, I actually gained 20 MPH on the downgrade and was able to take my foot off the gas and maintain that speed for the entire 2 mile grade!
You can get great mileage coasting at high speeds.
F/I or not.
SOHC
ORIGINAL: chrisc
Lastly, I felt that when I pulled off the gas from a slightly high rev, it seemed like the car did not quickly rev back down. It felt way more natural...I dont really know how to explain it.
Lastly, I felt that when I pulled off the gas from a slightly high rev, it seemed like the car did not quickly rev back down. It felt way more natural...I dont really know how to explain it.
Still, 7-8 seconds after you take your foot off the gas, the car does still decellerate automatically... but only ONCE!
Used to do that EVERY 7-8 seconds after you take your foot off the gas.
My average mileage went up by about 2 MPG because of this.
On one hill near my place, keeping the throttle steady, I actually gained 20 MPH on the downgrade and was able to take my foot off the gas and maintain that speed for the entire 2 mile grade!
You can get great mileage coasting at high speeds.
F/I or not.
SOHC
I don't have a tuner... yet.
Next year.
SOHC
4th Gear Member
Joined: Feb 2007
Posts: 1,028
From: Green Mt State
RE: True Duals Performance...Facts...
ORIGINAL: chrisc
There are two people who have actually dynoed the pre and post duals on an n/a car, and they both lost like 5rwtq
There are two people who have actually dynoed the pre and post duals on an n/a car, and they both lost like 5rwtq
My pony has more top end performance than before.
Today, I just ran a 06 GT from a 65 roll.
I think he dropped into 4th and floored it, mine downshifted to 3rd.
I shot ahead about 6 feet for a few seconds, then he pulled aheadwhen I hit 4th.
I pulled up to him again in 4th around 5000 RPM and held on until I hit myspeed limiter.
He walked by me and I had to slow down for my exit.
He was surprised as hell by the expression on his face! He saw my plate the first time I passed him to get his attention, so he knew I had a V6.
Now, I know the GT has 90 more hp,I think that ifhe had an automatic he would have beat me. Or if he had downshifted in 3rd not 4th, right?
I still love my little V6.
I like it when I can impress a GT owner.
Next year CAI and tuner.
SOHC
4th Gear Member
Joined: Nov 2006
Posts: 1,199
From: State Of Confusion
RE: True Duals Performance...Facts...
ORIGINAL: SOHCman
I can't understand a drop in performance by decreasing backpressure.
My pony has more top end performance than before.
Today, I just ran a 06 GT from a 65 roll.
I think he dropped into 4th and floored it, mine downshifted to 3rd.
I shot ahead about 6 feet for a few seconds, then he pulled aheadwhen I hit 4th.
I pulled up to him again in 4th around 5000 RPM and held on until I hit myspeed limiter.
He walked by me and I had to slow down for my exit.
He was surprised as hell by the expression on his face! He saw my plate the first time I passed him to get his attention, so he knew I had a V6.
Now, I know the GT has 90 more hp,I think that ifhe had an automatic he would have beat me. Or if he had downshifted in 3rd not 4th, right?
I still love my little V6.
I like it when I can impress a GT owner.
Next year CAI and tuner.
SOHC
ORIGINAL: chrisc
There are two people who have actually dynoed the pre and post duals on an n/a car, and they both lost like 5rwtq
There are two people who have actually dynoed the pre and post duals on an n/a car, and they both lost like 5rwtq
My pony has more top end performance than before.
Today, I just ran a 06 GT from a 65 roll.
I think he dropped into 4th and floored it, mine downshifted to 3rd.
I shot ahead about 6 feet for a few seconds, then he pulled aheadwhen I hit 4th.
I pulled up to him again in 4th around 5000 RPM and held on until I hit myspeed limiter.
He walked by me and I had to slow down for my exit.
He was surprised as hell by the expression on his face! He saw my plate the first time I passed him to get his attention, so he knew I had a V6.
Now, I know the GT has 90 more hp,I think that ifhe had an automatic he would have beat me. Or if he had downshifted in 3rd not 4th, right?
I still love my little V6.
I like it when I can impress a GT owner.
Next year CAI and tuner.
SOHC
4th Gear Member
Joined: Feb 2007
Posts: 1,028
From: Green Mt State
RE: True Duals Performance...Facts...
Hey Wolf,
Anyone out there try the 70mm throttle body from Granetelli?
Says its good for 11 hp. Don't know the price though.
Like you said, a good driver makes the difference.
I guess a V6 and a good driver is better than a GT and a not-so-good driver.
SOHC
Anyone out there try the 70mm throttle body from Granetelli?
Says its good for 11 hp. Don't know the price though.
Like you said, a good driver makes the difference.
I guess a V6 and a good driver is better than a GT and a not-so-good driver.
SOHC
5th Gear Member
Joined: Mar 2006
Posts: 3,893
From: arizona
RE: True Duals Performance...Facts...
MRT single axleback i had 212/242
with flowmaster dual with gt hpipe i had 211/239
the only change besides the exhaust, wa i removed the PHP alternator pulley (3-5rwhp/rwtq) so i dont think i lost any torque, and may have picked up a couple ponies. regardless, i definately didnt lose power.
with flowmaster dual with gt hpipe i had 211/239
the only change besides the exhaust, wa i removed the PHP alternator pulley (3-5rwhp/rwtq) so i dont think i lost any torque, and may have picked up a couple ponies. regardless, i definately didnt lose power.
