Secondary injector question

[snojnke]

For those of you running secondary injectors....when are you adding fuel with them? My set-up starts opening secondary injectors at about 1.5 lbs of boost but I get a bog it seems right when they open. My thought is I probly don't even need to add secondary injectors until maybe 5 or 6 lbs or even higher and let the primary injectors handle fueling until then. Or am I way off?

 

[RedRider]

One of the setting should be boost fuel timing is this the old style of dobec box. If it is call dobec and get to new box for the pro. It works the same a the box for the etec.

 

[snojnke]

Yes it is brand new box and yes I can adjust when boost fuel starts. Just wondering if I even need boost fuel until higher boost like 6lbs.

 

[RedRider]

I would spend some time on the trail and adjusted the boost timing 1/2 a light later at a time. Just watch the lights when the boost mode is on

 

[snojnke]

So when do you think fuel should be added? What are the proary injectors capable of?

 

[RedRider]

What's the AF gauge doing when it comes on too boost.

 

[snojnke]

So while cruising at 14 or 15 afr drops quickly to 13 and then to 12.5 as rpm and boost increases. Sounds like a sick goat for a second or two then pulls out of it.

 

[JSCC]

My secondaries don't start to fuel till 9lbs, which is too late. I get lean around 7lbs. So I am having my box reprogrammed to start fueling secondaries around 6lbs.
Primaries fuel fine till then.

 

[snojnke]

Thanks, that's kind of what I thought. I'll give that a try.