Volvo S70 Made from 1998 to 2000, this sporty model replaced the 850 sedan and instantly became a hit.

Performance and tuning

Old 03-04-2019, 06:08 PM
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Join Date: Feb 2019
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Default Performance and tuning

So i built an na motor top to bottom now its studded with a 22t turbo and its really lean 17lbs of boost. what size injectors should i go with i was looking at some 1000cc 95lb this is going to be a track car that i plan to drive alot mileage isent a big deal and i run premium with 105 additive so i was thinking atleast 800cc, any ideas?
Old 03-05-2019, 09:30 AM
Join Date: Mar 2012
Location: Ridgefield, CT
Posts: 4,775

Do you have a target HP number in mind? Is your ECU tune / wastegate set up for 17lbs steady state or peaks at specific RPMs?

Here's a link to a handy calculator:

Assuming your target is 400 HP, your fuel pressure is 45 PSI and you choose a racing duty cycle of 85%, this site is suggesting a 600cc injector is the one (note that's about 80% larger than stock which I think is 325ccs or so).
Old 03-07-2019, 08:41 PM
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I lied its a stock turbo, guy i got it from said it was a 22t, and the plate is gone, but the more digging i do i think its stock
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