End3rx

Hey guys, I had a quick question I'm hoping someone could answer.

So I have a 2000 SI, looking to swap in an LS/Vtec. I have read a few guides and extensive tuning is recommended. My buddy suggests that I convert it to ODB1 or tuners won't be able to tune correctly without mods.

My question is, how difficult is it to tune on ODB2? Would something like hondata be required?

grumblemarc

iTrader: (4)

You cannot tune OBD2. At all.

apexi_rsx

only tuning u can do n/a is with a piggyback or VAFC tricking the map sensor to add and subtract fuel per rpm. and control vtec engagement. i dont recomend boosting on these maybe the AVCR for boosting.

grumblemarc

iTrader: (4)

I don't really call VAFC or any such archaic device tuning. You can drop about a grand on an AEM EMS to replace your stock ECU.

Linked

am i wrong or is the aem ems what they call a piggyback system?

i thought that was the typical way you can get any type of mapping on the motor

Wrona

yeah OBD2 tuning doesnt exist unless it comes to the k-series w/ Kpro and thats only for codes and stuff

grumblemarc

iTrader: (4)

I read somewhere that it replaces the factory ECU. I thought it was a piggyback as well but maybe I'm just misunderstanding. In any case it will still set you back about a grand.

Linked

http://www.aemelectronics.com/engine...ent-systems-9/

yeah, i'm guessing it does replace the factory ecu, at least the EMS does,

there are fuel/ignition control units apparently that can piggyback on the factory ecu it seems

grumblemarc

iTrader: (4)

Yeah. There's the EMS and the FIC or something. Cant keep them straight.

94EG8

There used to be a few guys back in the day that could chip OBD2 ECUs but I'm not aware of anyone doing it now (it was extremely rare even then)

grumblemarc

iTrader: (4)

I remember reading about that when I was researching my turbo build a few years ago but they were long gone even then.

End3rx

I know its a bit late, but thanks for the clarification and info!