As Im currently building a NA S52 I had a question for any M/S5X gurus out there. Are 24# injectors really enough for ~300-310 BHp? Ive noticed that on the engine bay thread there is a built s52 with 24# injectors pushing 290 ish RWHP. For some reason that just seems low, anyone have any experience with this? Is 24# enough or should I just go bigger and tune down fuel?
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I have a fully blueprinted S52 that will be pushing about 280-290 as soon as i hook up my standalone ECU and get some tuning done. Currently using 24# but planning on stepping that up in the very near future. 300whp is a very very high # for an S52. Whats your setup? ITB's? Euro or USA motor?The best one-stop shopping for German car parts and lifestyle: http://www.gutenparts.com/ -
Ha, 300 bhp, not 300whp. It's a US3.2 But it has a ported and polished head, shricks, 11.5 compression ratio, and is also bored out to 87mm. On top of this I'll be using an m50 manifold and obd1 tuning.
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Well aside from how terrible OBD 1 tuning is, I have a 5 angle valve grind, schrick cams, oversized valves/supertech dual springs, port/polish, block bored out with wiseco high comp. pistons, m50 manifold, vac 75mm throttle body, supersprint headers and i originally dynoed 250 to the wheels on a dynojet with a TRM chip. With a Vipec standalone ECU and alot more tuning i will probably hit 280 to the ground. Thats with a drivegear tranny and REM polished diff & CV joints. 300bhp out of a US S52 is just about unheard of without ITB's are some serious overbore.The best one-stop shopping for German car parts and lifestyle: http://www.gutenparts.com/Comment
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I see. I was simply going off what others had said. Thanks for the info, it should help the estimating a bit.Comment
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Ive used the calculators like that, I just wasn't sure how accurate they were. Given the amount of variance among engines.Comment
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