Tuning Jato 3.3 is taking a toll on me !

[TheNitroGuy]

Alright, I've been refraining from posting up a thread regarding tuning but I need some advice. I haven't used the jato in about 3 weeks due to the hot weather we've been having. I finally went to fire it up and it was giving me a hard time so I set both the HSN and LSN back to factory.

I feel like when I adjust the HSN, get it going good and move on to the LSN its somehow going out of whack. As if adjustments on one is affecting the other. Are people tuning in the same weather I'm trying to tune mine in ? Today was 93 degrees with 90% humidity.

I'm going to be ordering a temp gun online because it felt as if the truck was running way too hot. In the beginning it was spitting unburnt fuel from the exhaust so I leaned the HSN a bit and finally got the LSN to shut off between 3-4 seconds. However when I lift the rear the tires would start spinning so I adjusted the ISN and for some reason it seemed to throw everything off.

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[StixXxJaTo88]

http://traxxas.com/forums/showthread...g-for-jato-3.3

Check this thread should help you out.

[TheNitroGuy]

I saw that thread before. Assassins post really helped out a lot. I'm going to print it and try from there see what I can get.

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[Assassin]

Yeah, that is a hot and humid day, can make the tune a bit finiky. Give it a go with a lil less humidity. The 3.3 has a tight pinch, if not fully broken in the tune will be finiky untill the pinch is broken in.

If you dont have a temp gun you can use the Spizzle test.

Spizzle Test

Dab a bit of spit or watter on the cooling head, as close to the top as possible.

If it just sits taking more then 8 seconds to steam off, the engine is too cold.

If it Boils off right away almost instant, the engine is too hot.

If it dances around and boils off in like 3 to 5 seconds, your engine is over 220f and not running too hot.

Thats just how I do it, I think the manual has a more presise explination.

Its very easy to run the Jato too lean, it stays lit, accelerates like a monster for the most part, then the flame outs and pesky tuning comes in soon after.

[TheNitroGuy]

I'm going to give it a try tonight if I can get out of work early enough. Also another question how are you determining the idle gap size ?

[Assassin]

Paper clip works. Unwind it ans use its thickness to guage the gap, after a while you get used to it.