NoPistons -Mazda Rx7 & Rx8 Rotary Forum

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rx7ahh

04-15-2003 09:21 PM

is it safe to run a 3 inch turbo back exhaust with the stock turbo or would it be better to run 2.5 so theres more back pressure?

ILUVMY88CABRIO

04-15-2003 09:36 PM

Get a walbro fuel pump, or SAFC to add more fuel and you should be ok. A boost controller and ported wastegate would help out alot too.

j9fd3s

04-15-2003 09:58 PM

the problem is boost control, 2.5" exhaust will prolly hit fuel cut (9-10psi) the 3" will make more power but its at like 11-13psi and thats a lot

mike

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