Semp1
Well-Known Member
- Thread starter
- #1
I’ve read that you should build for the future with headers. I guess If boost the car this will be important to me later on. I’ve also read that with the bigger diameter you lose low end torque. From the numbers I’ve seen these 2 seem the exact same on the dyno at the top end Matter of fact the 1-7/8 produced slightly overall better numbers NA in the hp dept which it’s supposed to and the exact same tq numbers at the top end. My question is how much tq am I losing if I stay NA and do 1-7/8 in the low end? Don’t want to buy the 1-3/4 and say I should’ve just bought the 1-7/8 down the line. Also don’t want to buy 1-7/8 and say I should’ve went with the smaller diameter because it’s better for my application. My upgrades are a custom dyno tune , Roush cold air, Corsa Xtreme catback w/active. Keep in mind I might stay NA. The answer I seem to get is if I am staying NA. 100% just do 1-3/4. It’s better overall through the powerband. But if I am going to boost the car obviously 1-7/8. My question has a second part. If I do 1-3/4 and get the itch down the line will that hinder the supercharger at all?
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