impulse nytro #'s?

[mkhoskins]

I just picked up my new impulse nytro, I am new to this boosted thing and wanted to know where my numbers should be, I ride at around 6k-10k.

Where should my A/F ratio # be?

Fuel pressure # be?

If I run 50/50, where is boost level ok?

If my numbers are off, what do I do to change and get them all back? boost, fuel, etc?

 

[Motleyone]

Did you just have it built or did you buy a used sled?

 

[mkhoskins]

used sled

Did you just have it built or did you buy a used sled?

just bought a used sled... Not totally sure where my range should be when I watch the gauges?

 

[Motleyone]

So you have the prologger on it? Is it the 2860 turbo kit? Do you have the upgrade with the front surge tank? What size injectors (450 or 750cc). 450s are blue, 750s are black. Need to know this stuff to answer questions.

 

[mkhoskins]

not all info

So you have the prologger on it? Is it the 2860 turbo kit? Do you have the upgrade with the front surge tank? What size injectors (450 or 750cc). 450s are blue, 750s are black. Need to know this stuff to answer questions.

It has the 2860 turbo, 750 cc inject. does have the surge tank.... no prologger.

 

[Motleyone]

So your not running the standalone? You have a simple A/F gauge and a boost gauge?

On that 2860 turbo you won't wanna run it over 16-17 lbs. That's about it max otherwise you may burn it up from over working it. Make sure after pullin some hills and spoolin that sucker up that you idle the sled for 10-20seconds before you shut it down.

Fuel pressure can range from 37-43 but I have found 39.5 to be perfect for my sled. If you have the standalone on your sled the only thing you will need to adjust is boost level and fuel pressure but 39-40 should work.

If you are not running the standalone and have a purelogic box it will take some dialing in for sure. I can get ya the stock box numbers I was running on a buddies Impulse Nytro tomorrow. With the Pure Logic set up you will be running a progressive rate fuel regulator and it is a little more touchy to get dialed in and for the Impulse system it is 1:2 vs the standalone which runs a static regulator at 1:1. I have tuned in a nytro with the pro rate regulator and the box and as little as a 1/2 turn on the regulator will make the sled run like crap. Your A/F should be running 12.5-12.9 at WOT. So make sure you start fat and trim it down. So you have to get those two things in line to get her to run right on boost.

If your runnin 50/50 you can run 17lbs at 6-10k all day long and never have to worry as long as your A/F is good. Don't worry to much about A/F at idle and mid, it is at WOT that you need to have it perfect. At idle to mid it may jump around from 10-16 and you will never get that dialed in to 12.5-13. Maybe at idle but nowhere else other than WOT.

 

[mkhoskins]

So your not running the standalone? You have a simple A/F gauge and a boost gauge?

On that 2860 turbo you won't wanna run it over 16-17 lbs. That's about it max otherwise you may burn it up from over working it. Make sure after pullin some hills and spoolin that sucker up that you idle the sled for 10-20seconds before you shut it down.

Fuel pressure can range from 37-43 but I have found 39.5 to be perfect for my sled. If you have the standalone on your sled the only thing you will need to adjust is boost level and fuel pressure but 39-40 should work.

If you are not running the standalone and have a purelogic box it will take some dialing in for sure. I can get ya the stock box numbers I was running on a buddies Impulse Nytro tomorrow. With the Pure Logic set up you will be running a progressive rate fuel regulator and it is a little more touchy to get dialed in and for the Impulse system it is 1:2 vs the standalone which runs a static regulator at 1:1. I have tuned in a nytro with the pro rate regulator and the box and as little as a 1/2 turn on the regulator will make the sled run like crap. Your A/F should be running 12.5-12.9 at WOT. So make sure you start fat and trim it down. So you have to get those two things in line to get her to run right on boost.

If your runnin 50/50 you can run 17lbs at 6-10k all day long and never have to worry as long as your A/F is good. Don't worry to much about A/F at idle and mid, it is at WOT that you need to have it perfect. At idle to mid it may jump around from 10-16 and you will never get that dialed in to 12.5-13. Maybe at idle but nowhere else other than WOT.

Ok, its actually the 2871 turbo, It is the simple a A/F and boost gauge as well as fuel pressure gauge it has the pure logic regulator but does have the standalone fuel regulator. Right now it is all dialed in for what I am riding but I wanted to figure out what to do if i do need to adjust a little.... I plan on running 15lbs all day and very rarely pushing past that, so a dash of race gas in every tank, I should be fine? If you could get me those numbers that would be great, I really appreciate all the help... I am so new to this four stroke game, let alone a turbo.