Exhaust size... 2.5 or 3"..
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Exhaust size... 2.5 or 3"..
i'm debating if i should go 2.5" or 3"... i hear 3" is pretty big and i might have ground clearance problems.... also i'm just running 10 lbs when im done so, what do u guys suggest?
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Re: Exhaust size... 2.5 or 3".. (00SilverLS)
You can get away with 2.5" If it's going to be a pain to make a 3" fit, just go 2.5" Yes of course you'll make more hp with a 3" but its not like anything under 3" is horrible.
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Re: Exhaust size... 2.5 or 3".. (BLK94RS)
More backpressure= more likely to boost spike. Of course, the less boost the better if you have a 2.5" or smaller DP and exhaust. For 10psi, I would not go as small as 2.5".
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Re: Exhaust size... 2.5 or 3".. (97CivicFerio)
More backpressure= more likely to boost spike.
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Re: Exhaust size... 2.5 or 3".. (degradated)
More backpressure= more likely to boost spike.
I thought it was the other way around (?)....That's why some Drag owners notice spiking when they upgrade to 3"....the exhaust doesn't want to go through the wastegate, it wants to go through the manifold and out the exhaust piping.
I thought it was the other way around (?)....That's why some Drag owners notice spiking when they upgrade to 3"....the exhaust doesn't want to go through the wastegate, it wants to go through the manifold and out the exhaust piping.
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Re: Exhaust size... 2.5 or 3".. (degradated)
More backpressure= more likely to boost spike.
I thought it was the other way around (?)....That's why some Drag owners notice spiking when they upgrade to 3"....the exhaust doesn't want to go through the wastegate, it wants to go through the manifold and out the exhaust piping.
I thought it was the other way around (?)....That's why some Drag owners notice spiking when they upgrade to 3"....the exhaust doesn't want to go through the wastegate, it wants to go through the manifold and out the exhaust piping.
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Re: Exhaust size... 2.5 or 3".. (97CivicFerio)
Considering the enormous increase I felt going to a test pipe from a stock cat this week, I can say for sure that backpressure makes a BIG difference on a turbo car.
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Re: Exhaust size... 2.5 or 3".. (97CivicFerio)
More backpressure= more likely to boost spike.
I thought it was the other way around (?)....That's why some Drag owners notice spiking when they upgrade to 3"....the exhaust doesn't want to go through the wastegate, it wants to go through the manifold and out the exhaust piping.
That may be with the Deltagate.
I thought it was the other way around (?)....That's why some Drag owners notice spiking when they upgrade to 3"....the exhaust doesn't want to go through the wastegate, it wants to go through the manifold and out the exhaust piping.
That may be with the Deltagate.
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Re: Exhaust size... 2.5 or 3".. (Rob92SC)
That's wrong 97CivicFerio. With any wastegate, if you run a higher flowing exhaust (open exhaust or large piping) you will boost creep.
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Re: Exhaust size... 2.5 or 3".. (97CivicFerio)
LOL. Ok.. listen. Going to 3" is going to cause creep in a *few* cases. But you can control creep by using larger vac lines, having a better designed WG and Manifold, etc. Going 3" doesn't mean you'll creep forever. It's all in design. If you run a really restrictive exhaust, like stock.. then you wont reach full boost, or it'll take longer to do so. No poo poo that the larger exhaust produces more HP. I never disagreed with that. I'm just letting you know how things work.. basically a larger exhaust CAN induce creep.. while a restrictive exhaust limits spool-up and full boost.
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