I will mention one thing about exhaust. Even if you aren't planning on building a full race vehicle, spend the money to get the exhaust changed to 3". At 10 psi on my Focus (the turbo is soon to be switched to our PR5), back to back dyno runs show a 35hp increase at the wheels when going from a 2.25" to a 3". There are NA guys out there that spend 2-3 times the cost of a 3" exhaust for a 35whp increase and are happy to do it. A side benefit is that the turbo spools more quickly and you have more "area under the curve" which beats peak hp every time. Just a thought.
My Quest for 13's
- Thread starter smp3000
- Start date
Yep, what he said. A lot of people lose sight of what they really need to be trying to do and they start concentrating on that peak number. If you could build a car that starts out at 150hp at 1rpm and stay at 150hp all the way to redline, you would probably beat pretty much any street car on the track. The most important part when trying to improve performance is the increase the area under the hp curve and the torque curve.
Hmmm.. Very interesting. I'm learning a lot here. Ok, so 3 inch exhaust piping is probably somehting for a future mod. I just hate to thinka bout it cause I JUSt got my bosal system put on and it's so damn pretty and sounds so good.
On the other hand, LSD was something I was going to look at for sure, but after talking to a few people, I'm not so sure now. Maybe for someone dumping the clutch a lot, or running at a higher psi. But I don't really plan on going higher than 8, and I always ease into the clutch-not only do I have the stock clutch-but I feel like I'm hurting my baby.
On the other hand, LSD was something I was going to look at for sure, but after talking to a few people, I'm not so sure now. Maybe for someone dumping the clutch a lot, or running at a higher psi. But I don't really plan on going higher than 8, and I always ease into the clutch-not only do I have the stock clutch-but I feel like I'm hurting my baby.
1st MP3 in NH said:
I won't argue with them. They are definitely experts. I will take issue with the opinion that most of the people who spend the money on this kit will leave it set at 8psi. The boost level I was running was only a couple of psi higher than that and it showed a dyno proven 35hp increase. For those who intend to run only 8psi forever, 2.5" would be fine according to the experts. For me, it is worth the money spent on a 3" for higher boost levels.
2.5 is adequate but 3 is the way to go. When I upgraded from a 2.5 to a 3 inch I realized 11 dyno hp, thats almost 15 flywheel hp by just going up 1/2 an inch. We can run 13's in our cars.
Here is my opinion on how to do it with an FM setup.
10psi of boost running c16 or 110 octane race gas
LSD
Drag radials w light wheels
motor mounts
2.5 inch exhaust(atleast)
sealevel and 60 degree temps and 13's will not be a problem
I have 2 1/2 full exhaust system, I'm runing my setup to 8 psi and this give my 192 whp and my best time on the 1/4 mile was 14.6 at 102.6 mph.
I'm pretty sure that what's stoping me to go faster is because it's runing too rich. With this setup, the next step to get more performance is to find a device that can be use to control the fuel map and the timing........ I think!
I'm pretty sure that what's stoping me to go faster is because it's runing too rich. With this setup, the next step to get more performance is to find a device that can be use to control the fuel map and the timing........ I think!
