Who can tell me the difference between the Power MaxCr r37 and r49. I suppose the difference is just in the controllers or am I mistaken.

 

I believe you are right and the R 37 can't have a cool down timer setup on it.

 

The 37 does not have cool down, guages and I dont think rail pressure option or adjustabel timing. My original plan was to get the 37 cause I got guages all ready but the price diff is well worth all the other fetures. Plus besides just hookin up basic connectors all you got to do is drill a pyro and you get 3 guages.