1988 S10 with 3.1L V6

5ft24 · Post by **5ft24** » Wed Dec 26, 2012 2:15 pm

Upgraded my 2.8 to a 3.1. Looking to add fuel at 4000 RPM and above, as above 4K it leans out and melts spark plugs. The VE table only goes to 3200 RPM. Where do I need to go to add fuel for 4000 and above?
Thanks

EagleMark · Post by **EagleMark** » Wed Dec 26, 2012 9:37 pm

What ECM/Mask ID?

2.8 and 3.1 TBI are usually same size injectors, but I'm sure the bin is differant?

Post by **robertisaar** » Wed Dec 26, 2012 9:53 pm

i would assume there is a VE adder table....

but as Mark pointed out, need to know what you're playing with first.

5ft24 · Post by **5ft24** » Thu Dec 27, 2012 11:16 am

EagleMark wrote:What ECM/Mask ID?

2.8 and 3.1 TBI are usually same size injectors, but I'm sure the bin is differant?

Sorry... 1228062 ECM, ACJH broadcast code, $4E mask

Added an adjustable FP regulator as well.

Post by **robertisaar** » Thu Dec 27, 2012 11:41 am

there is a VE adder table at 39E for dealing with fuel at higher RPMs.

not sure which XDF you're using, but this is the one i generated, has some more stuff than the common one.

http://www.wikifortio.com/835826/my 4E.xdf.zip

5ft24 · Post by **5ft24** » Thu Dec 27, 2012 11:52 am

robertisaar wrote:there is a VE adder table at 39E for dealing with fuel at higher RPMs.

not sure which XDF you're using, but this is the one i generated, has some more stuff than the common one.

http://www.wikifortio.com/835826/my 4E.xdf.zip

Now it makes sense... VE above 3600 stays at the 3600 RPM value PLUS whatever is in the VE Adder table...
Cool!

Thank you!