What about a simple solution such as using a smaller secondary (third) injector to regain our missing HP?
I'm thinking that in "closed loop" it might not make much or any difference but during WOT ("open loop") it would run leaner.
Having a third (secondary) injector on it's own circuit does give us some potentially simple wiggle room I think.
The other nice thing is that since we only have two secondary injectors it would be a cheap experiment and or fix.
One of the problems that might arise is that the ECU in "closed loop" might try to correct what it thinks is more or less fuel and since the secondary would be putting out less fuel than expected in might hunt a little.

Vince

 

...unless you blow your motor up...

but a very interesting idea, to simply restrict the secondary cycle... *shrug* very tentatively, go for it??

btw, what's the spec cc/min on the current secondary injectors?

 

I don't know the spec but they can be CC'd easy enough.

I'm thinking 5% less fuel for start and working from there.

Vince