3sge efi ecu questions

[sam-131]

as you can pretty much tell from title of this question i am a total nOOb when it comes to efi i was just wondering how smart the 3sge gen 2 ecu is will it be able to run half dencently if i say shim the head and run a thiner gasket

or to put it simply this is what i want to do shim the head run a thiner hg to bump the comp up a bit will she be right or will the stock ecu shit it self ?

sorry for this noob question but i am not to good with efi
thanks Sam

[RWDboy]

Although i have a gen 2 3S-GE sitting in my garage, I haven't actually checked if it has a knock sensor or not. I would say that it doesn't, but my word isn't gospel. If you run higher compression, provided it doesn't ping then you might get a tiny tiny percentage of performance increase (noting of course, that your cam timing will be slightly out).

Also I doubt that you will be able to take much off the head, as the valves usually run quite close to the edges of the combustion chamber roof. I'd take some metal off the block instead.

[sam-131]

hmmm yeh by the sounds of it it's not really worth doing i'll just run a thiner gasket
also i was wondering if i do a cut and shut job on the intake will (ie fwd to rwd tb placement) the ecu have any dramas ? i am still trying to sus out weather to run carbies or efi
sorry for the noob questions but i havent got a clue about this blasted efi shanigans thanks Sam

[sam-131]

double post

[RWDboy]

It would probably run fine as long as you used the same TB, and kept most of the vacuum hoses in a relatively similar position - which shouldn't be too hard on the intake manifold design for the gen 2 3SGE.

Running carbies would probably be more hassle than it's worth, you would have to set up a different ignition system to suit. Plus carbies are always a pain to balance, and you'd need a custom intake manifold, and a custom throttle linkage (not cheap!).

[sam-131]

hmmm well i see how i go but i still rekon that carbies would a walk in the park compared to efi but yeh seeing i got every thing minus the air flow meter i carnt see why not to go efi
thanks for the help mate

[Andrew162]

Although i have a gen 2 3S-GE sitting in my garage, I haven't actually checked if it has a knock sensor or not.

FYI gen2 & gen3 3SGE/GTE engines came with knock sensors, gen1's didn't.