intake/tb worth any significant gains on my fi setup?
09-13-2011, 10:40 PM
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intake/tb worth any significant gains on my fi setup? Looking to do a few mods this year. I put down 811 rwhp with a 408 f1a procharged engine thru a 4l80 and a horrendous set of headers and exhaust. I'm definetly doing that but I was wondering if there's any significant gains to be had by doing a good intake and throttle body. I'm running an ls6 now.
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09-14-2011, 06:13 PM
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The best part about forced induction such as a supercharger is if you want more power through more boost at it. An intake and tb isnt really going to do much for you because your already forcing the air past them. Now to a degree there is a diffrence but not enough to really be worth the time and effort. A fast system is really nice but if you have a good tuner worth his salt its not needed. Its alittle easier to tune but again a tuner worth his salt will know what to do. Forget all the rest of addons at this pont cheep easy horse power is more boost. No matter what changes you make you will have to retune.
09-14-2011, 11:28 PM
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I think you need to look at what type of FI setup it is. His boost is reliant on pulley size not a boost controller.
If you set the boost controller at 15psi on a turbo setup and change the intake it is going to flow more air (less restriction now) to keep the same amount of boost. That would be a really big gain.
His volume of air flow isn't going to change unless he re-pulleys the car to make the same boost after the intake swap.
You would probably see a really good gain just from an efficiency standpoint but I wouldn't expect it to be as much as a turbo setup that is keeping the same amount of boost before and after.
So if you are after max efficiency, swap the intake. If you just want more power, pulley it up. That is assuming you have the belt system to keep it from slipping.
If you set the boost controller at 15psi on a turbo setup and change the intake it is going to flow more air (less restriction now) to keep the same amount of boost. That would be a really big gain.
His volume of air flow isn't going to change unless he re-pulleys the car to make the same boost after the intake swap.
You would probably see a really good gain just from an efficiency standpoint but I wouldn't expect it to be as much as a turbo setup that is keeping the same amount of boost before and after.
So if you are after max efficiency, swap the intake. If you just want more power, pulley it up. That is assuming you have the belt system to keep it from slipping.
09-15-2011, 08:25 AM
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It's about air flow and restriction, if you install a fast you'll see a drop in boost but make similiar power. You will have spin the blower faster to get to the same boost level and that's where you'll see the increase at a set pressure level.