2.25 or 2.5?
#1
Honda-Tech Member
Thread Starter
2.25 or 2.5?
i have a 2.25" exhaust right now. I am planning on getting the greddy kit for my sohc soon and running low boost for a while. Will the 2.25" be big enough for this low boost application or should i go 2.5"? What kind of gains would i seen in going from 2.25" to 2.5" on stock 5.5psi?
#3
#5
Re: 2.25 or 2.5? (Diego Boost)
#6
Re: 2.25 or 2.5? (SOHC_MShue)
your probably going to experience a better spool time. the less back pressure present is better for a turbo'd vehicle...hence the ideal size would be a 3", but I chose a 2.5" because I'm not going to deal with the noise. The turbo will supress the noise dramatically, but i want nerely all the noise controlled. a 500-1000rpm decrease in spool time is something i'll forfeit to have a sound piece of mind and the police not hassling me.
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#8
Honda-Tech Member
Thread Starter
Re: 2.25 or 2.5? (Diego Boost)
well i'm only planning on probably running 6-8psi for a while on the t25 in the greddy kit. Do you think it would be worth it to up my exhaust diameter or just keep what i got for a while. Right now i'm just using 2.25" mandrel bent exhaust.
#9
Re: 2.25 or 2.5? (SOHC_MShue)
If you plan on being turbo for a while and you have the spare change for a 3" exhaust I would go with that. Just remember that if you ever take your turbo off and go N/A again your car is going to lag with the 3" , so save your current exhaust for a later day.
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