Quote:
Originally Posted by reni
If you're going to use the SR20 for comparison at least use the most recent one (which is still 15 years old at this point). The S15 Silvia had 250hp and cost about the same as an FR-S. There was even a non-turbo version had about the same 200hp as the FR-S, again 15 years ago.
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True, but let's compare some basics (efficiency and technological improvements aside):
S13 vs S15 SR: higher boost, better turbo, larger injectors, different factory ECU tune. Same internals for all practical purposes
S15 SR (Autech differences vs turbo): no turbo, smaller injectors, higher compression engine, better NA cams, different factory ECU tune, same internals for all practical purposes aside from compression/cam difference. Better header than the standard RWD S15 SR20DE version.
A closer engine to compare would be the P11 SR20VE, with a factory 10.4:1 compression ratio and making ~187 crank HP. P12 SR20VE had 11:1 compression ratio and makes ~205 crank HP.
The P11 SR20VE that I had in my G20 made almost 190FWHP with stock internals, Fujitsubo header, JWT ECU tune, intake, intake plenum spacer. The FA20 is similar in many respects, simple I/H/E mods + tune can get decent power to the wheels.
-alex