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Old 03-06-2011, 07:57 PM   #1  
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Default old *** supra greentop injectors.

How much power can these things safely support with my mods (in sig).

I'll be running 60 psi of pressure. Injector calculator says that at 60 psi they will flow 366cc.

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Old 03-07-2011, 12:25 PM   #2  
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The RC Engineering calculator thinks that at .6 BSFC and 80% DC, they will support about 175HP at the crank.
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Old 03-07-2011, 07:38 PM   #3  
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Hi Joe, thanks for the reply.

Before I installed these, I was on the stock red ones ([email protected]) I basically maxed them out on the emb seeing 99%dc at 7 psi with an a/f ratio of 12.5-1. I know, stupid right?

According to the calculator this would have gotten me very close to 195bhp.

When I tried out the greentops on the calculator with a dc of 90% and my bsfc set to 0.55 (from braineack's sticky this is supposed to be the most accurate for the miata) I came up with 225-230bhp.

The next time I do a log, the fmic will be installed and I'll be aiming for afr's in the low to mid 11's. I am hoping to see 8-10 psi.
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