10.5-11:1 pistons N/A BP

[Onehalfasia]

just wondering if i could run 10.5-11:1 compression on a mostly stock BP with 92 octane safely. Any info on high compression is appreciated.

[therieldeal]

you definately could. not sure what kind of performance you'd be able to get out of it with the stock ECU though.

-jon

[Mazda_Powered]

Built motor on the stock ECU FTL!

JACK.

[Onehalfasia]

does megasquirt II count as not stock ecu? Not sure what other ecu options there are besides stock for N/A

[therieldeal]

MS2 would be an excellent choice for a built NA BP. its a standalone... nothing like a stock ecu... at all.

-jon

[Onehalfasia]

would there be much of a difference in 9.5:1 to 10.5-11:1. I have the miata ones soon to be installed but recently thought about switching to aftermarket ones.

[1967cutlass]

1.5 bump in compression is definitely noticeable. I'm still kinda questioning whether 11:1 would be OK on pump gas because I know it's getting extremely close to not working on a v8.

[therieldeal]

matt (the guy who built my MS2 ) is running 11:1 (i think) in his mx3, running MS2 of course. i'll have to ask him what octane it likes.

-jon