I bought the 58X engine last year and am planning to use it in a TF P51 84.5" plane. I have been reading about the 58GX2 and the automatic choke function can any one tell me about this function? And can I use the 58X ignition module to do the same thing.

Hi,

please write me type of your ignition.
http://www.mvvs.cz/technicka%20podpora.html

Evolution ignition 4.8 V, serial number25989. The instructions that came with the ignition says VLACH Electronics, electronic ignition for model engine EZM 1 T1, EZM 2 T1. Can you help? Also can I use a 6.0V battery pack with this engine

Hi!
Sorry! But your MVVS 58cc engine is way way way too much engine for a 84" Spitfire.
The Brian Taylor Spitfire is 84 " and he recommends a 1.50 four stroke.
I have a MVVS 45cc engine in a 86 " Yak-54 and this engine hovers that airplane at under half throttle...

Hi
You have to buy new ignition "S type" and new part 1101 prop drive washer.
http://www.mvvs.cz/docMVVS/EN_ICU-S-ICU-P.pdf

I have to add. Important is size of sparg plug 3309 part. You have ignition for big and now they use smaller sparg plug.