headers and other HP boosting mods
#22
#23
im FI with stock internals..big mistake..motor is out as we speak being built..if your going to do it,do it right.
as for getting all the hp you can for ur money w/o going FI,less restiction,the more youll get,longtube headers and true dual exhaust applications are the way to go,they cut out the downpipe and y pipe..id say at least a 30hp gain in those 2 alone,add a spacer and upper plenum your looking at a 50hp gain total..check the market place shouldnt be more than about 1200.00 for those parts
as for getting all the hp you can for ur money w/o going FI,less restiction,the more youll get,longtube headers and true dual exhaust applications are the way to go,they cut out the downpipe and y pipe..id say at least a 30hp gain in those 2 alone,add a spacer and upper plenum your looking at a 50hp gain total..check the market place shouldnt be more than about 1200.00 for those parts
#24
#25
#27
I have dynos for practically all the mods I have on my car. You can message me on AIM if you want and we can discuss. I'll be happy to help a local member
But here are the mods I recommend in the order I think are most bang for the bucks.
1. Intake Plenum Spacer (5/16th " is the most popular dimension and only Motordyne makes it)
2. Test Pipes or High Flow Cats (obviously won't give you as much power)
3. Motordyne Y Pipe (the distance to the merge collector is more optimized)
4. Custom dyno tune with Osiris flash
![Smilie](https://g35driver.com/forums/images/smilies/smile.gif)
1. Intake Plenum Spacer (5/16th " is the most popular dimension and only Motordyne makes it)
2. Test Pipes or High Flow Cats (obviously won't give you as much power)
3. Motordyne Y Pipe (the distance to the merge collector is more optimized)
4. Custom dyno tune with Osiris flash
#28
Lightweight pulley and flywheel (they both are bolted to the crankshaft) are meant to reduce unsprung rotational weight, which suppose to help your engine turn quicker (not make more power) and have less load. The concept is similar to why light wheels will help you go faster. Keep in mind that even though the concept is the same, the actual effect on power is not the same.
FD is in the rear differential, so nothing to do with the engine. It is a torque converter and has nothing to do with power output. The effect of a bigger (in terms of number) FD is the same if you were to put smaller tires on your car (overall dimension not rim size). This is based on the fact that it takes less distance for a smaller wheel to make a complete circle compared to a larger one.
#29
Underdrive crank pulley as the name suggest is to underdrive the electrical accessories in your car in order to reduce the electrical demands for those non performance related components.
Lightweight pulley and flywheel (they both are bolted to the crankshaft) are meant to reduce unsprung rotational weight, which suppose to help your engine turn quicker (not make more power) and have less load. The concept is similar to why light wheels will help you go faster. Keep in mind that even though the concept is the same, the actual effect on power is not the same.
FD is in the rear differential, so nothing to do with the engine. It is a torque converter and has nothing to do with power output. The effect of a bigger (in terms of number) FD is the same if you were to put smaller tires on your car (overall dimension not rim size). This is based on the fact that it takes less distance for a smaller wheel to make a complete circle compared to a larger one.
Lightweight pulley and flywheel (they both are bolted to the crankshaft) are meant to reduce unsprung rotational weight, which suppose to help your engine turn quicker (not make more power) and have less load. The concept is similar to why light wheels will help you go faster. Keep in mind that even though the concept is the same, the actual effect on power is not the same.
FD is in the rear differential, so nothing to do with the engine. It is a torque converter and has nothing to do with power output. The effect of a bigger (in terms of number) FD is the same if you were to put smaller tires on your car (overall dimension not rim size). This is based on the fact that it takes less distance for a smaller wheel to make a complete circle compared to a larger one.