Already to fire up, when I've worked on piston engines, first thing I would do is fix timing in ecu and check it with a light. Is this necessary on a standard FD? (think it may be different due to the home + crank signal?) If so what should I fix at and which lead would I use (leading/trailing front/rear rotor)

 

Completely forgot to add:
car is a stock rx7 FD3s (JDM)
ecu is elite 2500, using the haltech pnp module and relevant basemap

 

yes you should check it. the way the FD is built the Haltech settings should have it correct.

Trust but Verify!

 

Thanks, do you know which spark lead to connet the timing light to?

 

nope, i would verify all four.

 

Heard the following from Andy Wyatt on another group, posting here for completeness:
"The timing mark on the FD is at 20 degrees ATDC, so you need to fire a plug at that angle to get it to line up. Normally that would be front trailing. -5 and 15 split means the leading fires at 5 ATDC and trailing fires at 20 ATDC which should line up with the mark."

 

right, but you should also make sure the others are not pointing at Mars... my Haltech experience is with the old junk, and that stuff cannot be trusted.