you don't need a 3" exhaust for 250hp... i'd say stick with your catback you already have and have the downpipe fabbed to fit to that point. slap on a high flow cat converter and you'll be good to go on exhaust. as for the BBT28 turbo, if you're looking for the ones off nissans like the S15 turbo you can get them for around $700-$800 new, and in used form generally about $500 in good shape.
370cc injectors will be too small if you're looking for 250whp... you'll max out their duty cycle very quickly and find out the hard way you need to go bigger. i'd go at least 440's if not 550's just to be safe. i'd recommend some MSD injectors if you need to buy new top feed style injectors because they are priced about the best. or like spyder said used DSM injectors are a great bang for the buck.
no need for an external WG on this setup either. all of the small turbos mentioned will have internal gates and those will be plenty fine for the power you want. plus it's another money saver there.
and to add to your list... set aside a hundred bucks or so for misc. piping/fittings for oil lines, water lines, intercooler plumbing, clamps, etc.
btw, good luck on making that motor hold that kind of power without any internal work
. "boost it until it blows, then upgrade"
Originally Posted by HiPSI
you don't need a 3" exhaust for 250hp... i'd say stick with your catback you already have and have the downpipe fabbed to fit to that point. slap on a high flow cat converter and you'll be good to go on exhaust. as for the BBT28 turbo, if you're looking for the ones off nissans like the S15 turbo you can get them for around $700-$800 new, and in used form generally about $500 in good shape.
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