Injectors
- Thread starter robrstopr
- Start date
Is this a Apex or Nytro. If it's a Apex you don't need them at all for 14-16 psi. If it's a Nytro your good to about 15 psi with the stock injectors too.
I have the bigger injectors in stock for the Nytro. For 18lbs and up they are necessary. 17 and under the stockers work fine. PM me if you have questions.
OK guy's ...I have fought this problem all last year. Here is what I no for sure. The first year I ran my S/C @ 12lbs stock injectors and It ran Awsome. The second year, being last year I ran my S/C at 15lbs and installed the bigger injectors (APEX). They fit just fine with no issue's there. But my sled was way over fueled and ran like crap at lower elevations.Lower elevations being 6-9 thousand. Above the lower elevations it ran great. I would say 10 thousand feet is the minimum elevation it will work good at. These are just my finding for my sled and other's may have diffrent findings. I hope this saves everyone alot of frustrations like I had.
P
pylon
Well-known member
OK guy's ...I have fought this problem all last year. Here is what I no for sure. The first year I ran my S/C @ 12lbs stock injectors and It ran Awsome. The second year, being last year I ran my S/C at 15lbs and installed the bigger injectors (APEX). They fit just fine with no issue's there. But my sled was way over fueled and ran like crap at lower elevations.Lower elevations being 6-9 thousand. Above the lower elevations it ran great. I would say 10 thousand feet is the minimum elevation it will work good at. These are just my finding for my sled and other's may have diffrent findings. I hope this saves everyone alot of frustrations like I had.
what youre saying should be the other way around?? a sled needs more fuel at lower elevations and less the higer you go . thats why when guys ran moutain jets at home they would lean out and melt their top ends.
I Know and believe me I think the same. All I know for sure is riding around home with the bigger apex injectors in my Nytro s/c'd, it ran like crap at 4-7 thousand feet. Went to revy and ran like crap(spitting ang sputuring) all the way up the trail till the top, When all of a sudden in a matter of about half a kilometer it came alive and had throttle response like I've never felt before. Then it ran awsome all day till I started down the hill at the end of the day where it got all spittery and sputtery again. Let me know what you think of that as I'm about the put the stock injectors back in. On my fuel / Air ratio gauge it read 11.5 to 12 all day long. But ran like it was flooding all day. I also have a different fuel pump on it from MPI as it was very lean (13 to 14)before.Thanks for any input. Trav
