For my '94 GSR, I'm getting it sleeved and bored out to 84mm and keeping my 10:1 compression ratio. Will I need fuel management for this, or will my stock ECU be able to compensate? I'm eventually planning on buying Hondata, FPR, and injectors when I boost, but I would rather not buy now if I can hold out. Thanks.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jerseykid609 &raquo;</TD></TR><TR><TD CLASS="quote">stock fuel set up is for stock bore you will need if anyhting more fuel in the motor otherwise it will run lean </TD></TR></TABLE>

I think it will run fine NA with the oversize bore. It might run a little lean at some spots but I think the ECU will compensate on the most part.

 

Get an aftermarket chip and burn it in while running stock. Most chips are running a little rich....

 

how about this. I'm gettin my block back, it is gonna be sleeved to 84mm. will my LS Ecu which was dyno'd tuned with Hondata compensate?

 

Any change and you really need to retune. Better safe than sorry.

 

If the compression is going to be the same I think that it will be fine.

 

I think if you have an adjustable fuel pressure regulator just turn it up a little bit to compensate for the bore. I dont remember exactly what fuel pressure 2.0 liters usually run.