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I just looked on my instructions and it has 47 n2o jet and 53 fuel jet.I ran mine that way for about 8 years and never had any problems. I would pick up close to 8 tenths in the 1/8.

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Insructions are WAY off for a decent jet package. That's not even a little fat, that's a LOT of FAT!!! Monte updated a lot of the NOS tunes and that looks like an old one. The 100 shot set up I use to start is 47N/40F. I run a minimum of 7 steps smaller on fuel than n2o to start and step on it from there. Some guys like Monte, IIRC, have stated to run 10 smaller.

Sniper/powershot/cheater, jet them all the same and the fuel jet should not be larger than the n2o jet. That's what Monte told me.

You guys are beating the ring lands to death with those fat tune ups.

There is a guy on another site using a super powershot IIRC, ran the stock 150 NOS jetting, 55/61 picked up .7-.8. Changed it to square 55/55, pulled timing, it's picked up close to 1.4 seconds and it's still fat! 13.3 to 11.91 and there likely still another 3-4 tenths in it.