[dunerat69]

So my ltr has a cherry bomb, no air box, k&n filter with pre filter, full Yoshi RS5 exhaust, and it's not quite running right. I've never actually messed with the mapping before, but I'm sure it needs to be tuned. How would I go about doing this?

 

[CQR]

A couple ways of doing it. You can either a) buy a tuner with a auto tune attachment and tune as you ride with a pc or b) buy a tuner and find a shop with a dyno and have them set up a map for you.

 

[jchevy4x4j]

So my ltr has a cherry bomb, no air box, k&n filter with pre filter, full Yoshi RS5 exhaust, and it's not quite running right. I've never actually messed with the mapping before, but I'm sure it needs to be tuned. How would I go about doing this?

Mine is doing the same thing now. I have the PC5 and had it dyno tuned. Ran great for a few trips now it bogs down here and there and backfires.

Curious what people have to say. I tried new fuel filter and injector, cleaned out the regulator and new spark plug.

 

[Ericltr450]

I had that problem until I took out the filter inside the swirl tank and added an inline filter. Could be a tune though for sure.

 

[urinmyway]

Dont forget about the little filter inside the fuel pump

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