I just installed the NA JWT ECU on my Classic.

My timing was set to 17 prior to the install, and to save paying the $500 core charge I changed it in the parking lot of Mossy Nissan (Thanks Greg Vogel).

Greg recommended setting the timing back to 15 but I couldn't do that until I got home.

Well the car is running pretty good with the timing set to 19 and the ECU. No sign of detonation or ping and I use 91 octane gas all the time.

Should I go ahead and turn down the timing?

Also for those of you who are thinking of getting this expensive mod I will give a short review of my short 1 day experience and butt dyno.

The car rev's quicker and smoother, shifts appear to be needed quicker even though the redline is raised to 7800.

Power seems to come on real strong about 3500 and doesn't give up all the way to the new redline.

I also got a hotshot gen5 header which will go on next. I'm real excited about this mod since it gives the best increases. And I understand the ECU will help here also.

Has anyone taken their car to JWT for after installation tuning, do they do this?

TIA

Art

The reason 15 deg timing is recommended, is JWT uses that number to base the map off. I would dyno the car, and see what timing the car likes. I'm glad you like the ECU.

Originally posted by eric96ser
The reason 15 deg timing is recommended, is JWT uses that number to base the map off. I would dyno the car, and see what timing the car likes. I'm glad you like the ECU.
I just got back from a little trip and I like it even more! :D

Art

I got about 3 more hp going from 17 deg. to 19-20 with the JWT ECU. Didnt base it on 15 deg., though.

Think you like it now, wait til you bolt up the header.
You'll have a huge grin for sure. Definitely worthwile mods.

Glad you like it , too bad JWT won't have one for us 00'-01' SE owners until Nissan comes out w/B16 bodystyle , LOL