jryeater

Hey all take a look at this. I thought shifting right at 3000 RPM was significantly saving gas. I guess not. Appearently I am shifting RIGHT when the second injectors hit and inject more fuel. Nothing like waisting more fuel.

As far as what i read before, it was 3750 RPM where the second injectors kick in...

Verdict. Shift below 2750 RPM, say 2500 should be fine.

http://www.rx8-shop.com/RX8_Specs.html

"Two injectors per rotor look after the varied engine loads. The primary injector takes fuel from the side of the injector body instead of the top. The resulting reduction in fuel travel through the injector body gives a quicker and more precise engine re-start after high speed/load applications. The secondary injector is mounted upstream of the inlet tract operating during mid and high rpm. Change over to twin injector operation takes place around 2,750 rpm or lower if the load commands it."

Rinkadink

Shift below 2750 and you'll have people honking and hollering.

jryeater

True...

cjkim

you're reading about the FD

jryeater

What is FD?
Thanks.

Bart!

Fd = 93+ Rx7

jryeater

"As far as what i read before, it was 3750 RPM where the second injectors kick in..."
Is for the 93+ RX7's?

cjkim

no, the link you posted isn't only about the rx8. the quote you mention is about the 13B-REW... or the FD. Scroll up a little, you would think the " The twin turbo chargers are fitted to a "dynamic pressure" cast iron exhaust manifold shaped to...." part kind of gives it away.

jryeater

Good to know...