Alpine nytro runs rough past 3000 rpm

[Boostednytro09]

What controls the injectors? Not familiar with the Alpine system.

Boost it xic box

 

[zx4ever]

Not sure if you have checked this out yet on testing the injectors on xic box https://duckduckgo.com/?q=boost it ...i=https://www.youtube.com/watch?v=Nu3UBsSYPcg

 

[zx4ever]

I had my injectors not turn on once and I found it was the white wire going to solenoid above oil tank had corrosion and was not making proper connection. My sled would idle around fine but as soon as I got into boost it would fall flat on its face. I cleaned up wiring and everything worked again.

 

[Boostednytro09]

I had my injectors not turn on once and I found it was the white wire going to solenoid above oil tank had corrosion and was not making proper connection. My sled would idle around fine but as soon as I got into boost it would fall flat on its face. I cleaned up wiring and everything worked again.

Could you possibly send a picture of which wire that is

 

[zx4ever]

It’s the 3 into 1 white wire that goes to the red/ white wire on Solenoid.

 

[zx4ever]

Follow all wires from the xic controller to make sure they have a good connection it is a very simple system to run. I’m sure you have done it already but make sure you do a very thorough boost leak check you could have a cracked header or a hole somewhere which would also give you troubles

 

[Boostednytro09]

It’s the 3 into 1 white wire that goes to the red/ white wire on Solenoid.
View attachment 158210 View attachment 158211 View attachment 158212

Mine has all three white wires directly from the box

 

[Mountaintech]

I had my injectors not turn on once and I found it was the white wire going to solenoid above oil tank had corrosion and was not making proper connection. My sled would idle around fine but as soon as I got into boost it would fall flat on its face. I cleaned up wiring and everything worked again.

Yes, good troubleshooting video. The XIC controls the injectors through their grounds.

 

[Boostednytro09]

Yes, good troubleshooting video. The XIC controls the injectors through their grounds.

Only one I could find was above the box on the frame

 

[Mountaintech]

Did you perform the 2 tests that the video outlined?

 

[Boostednytro09]

Did you perform the 2 tests that the video outlined?

Yes read rpm on the box and when I tested the injectors one time they didn’t fire and then another time they did

 

[Boostednytro09]

Did you perform the 2 tests that the video outlined?

I have checked fuel pressure which was at 32 psi I raised it to 40 now, is that good or could it use more? I see so many different answers to this question from 35 to 60

 

[Mountaintech]

I have checked fuel pressure which was at 32 psi I raised it to 40 now, is that good or could it use more? I see so many different answers to this question from 35 to 60

Where did you send your Boost-it controller to?

 

[Boostednytro09]

Where did you send your Boost-it controller to?

sds efi that’s who makes the box out of Calgary

 

[zx4ever]

Boost it kits do not use a aftermarket adjustable fuel regulator they use a stock apex fuel regulator, which I believe starts at 43 psi and is a 1 to 1 rise. That may be part of the problem