I only use the engine ECU, and splice the connectors together, but I keep the plugs on either side, or use another plug to keep it plug n' play.

The tach, I used the supra tach and fit it into the 4runner tach, and you can barely tell. Guy in NC said he hooked up the stock tach and it worked. <img border="0" title="" alt="[Confused]" src="images/icons/confused.gif" />

It is better to make torque at high rpm than at low rpm, because you can take advtage of gearing.
----------------------------------------------------------------
www.supracharged.com
1994 4runner - SAS, 38 TSL's, Turbo 7MGTE swap, Turbo Tranny
Dual T-case, D44/D60 ront/rear