Piping 101

[PWMAN]

You don't need 2.5''. 2.5 is only necessary if you are making over 300 HP.
18G is a decent size turbo. There are too many T3 wheel sizes to compare them.
Save your money on a BB turbo. They give you an extra 200-300 RPM spool, big deal.

[PWMAN]

Plus the outlet to the turbo is going to be no more than 2.25''.
Stick to 2.25'' for better velocity.

[XixGenuinexiX]

i heard a ball bearing starts to spool around 2500rpms that is lot sooner than 4000rpms, well at least to me it is

[PWMAN]

Originally Posted by XixGenuinexiX

i heard a ball bearing starts to spool around 2500rpms that is lot sooner than 4000rpms, well at least to me it is

It's not that much at all.
There are way too many variables to answer this, but say they are the same size, and on the same engine-a BB would spool max PSI about 200-300 RPM maybe up to 500 depending on size.
You are only boosting 6 PSI? You have no need whatsoever for BB turbo. Don't waste your money. Get the Greddy, greddy also prides themselves on having the easiest to install kits ever made. Plus they are inexpensive.

[PWMAN]

Oh now I see you said ''starts to spool''. I thought you meant what RPM you will get max boost at. Turbos can make boost at 2000 RPM, a BB turbo is not worth it if you are only running 6 PSI. You should have max boost by 3000 RPM no problem.

[XixGenuinexiX]

i'm planning on running at least 8psi

[PWMAN]

Originally Posted by XixGenuinexiX

i'm planning on running at least 8psi

Not much difference between 8 and 6. You said 6 PSI before. Whatever.

[XixGenuinexiX]

no, i didn't i just used 6psi as an example

[PWMAN]

OK so 8 PSI. Greddy kit is still the best way to go in terms of HP gain per dollar and easiest to assemble.

[darkerdayz]

ok, dont mean to jack this thread, but i have a question. earlier, CougarSVT said taking the vehicle to an exhaust shop and having them make the piping is bad because they don't use mandrel bent piping. would it be ok to let them do the turbo manifold for you? i plan on getting an Acura Vigor (5 cyl) and there is absolutely nowhere that i have found that sells a manifold for that car. if any of you know of somewhere, please let me know. also, if it is not recomended that you bring it to an exhaust shop to make the piping, then where is a good place to bring it?

[Bambooseven]

You guys are dumb, most exhaust shops will order the mandrel bends and make the mandrel bent piping for your car. My intercooler piping is FAR better then anything every put in a kit, it was custom tailored to MY car. and as for the rest of that kit bullSH*t I spent $1100 on my turbo setup, and I'll put it up against anybody's "KIT" and be as good or better in all aspects. $3000? for $3000 you could have a turbo in your car AND a built bottom end so you could run high boost and destroy people with their "kits" stop taking the easy way out and do things right, do you change your own oil, then make your own turbo kit, it's about the same difficulty.