How fast is a 86 with 20V?

[NoHachi]

I would think twice about using the DTA ecu. While it is a fine unit that features much of the capabilities of the more expensive ECU's, there are some serious issues with the ease of use..
Prepare to swap MOST of the sensors on the block. DTA works (or at least used to work that way 1.5 years ago) with specific sensor inputs (usually GM sensors). You have to swap over all of these sensors if you can find the correct ones. The sensor part numbers that DTA mentions in the manual are NOT correct!
The tuning sofware included with the ECU is from the stoneage. Great if you have to tune on an ancient 486 laptop, but it lacks some neccesary options. Blending of the fuel and ignitioncurves in a graphical way is not supported. it can plot 3D curves, but you can not manipulate them. Shame, because it is real help in the first stages of tuning.
The most irritating thing of the unit is the way the mixture trim and ignition advance box works (REALLY expensive ad-on from DTA, not much more then a box with some trim potentiometers, find a wiring diagram form the internet and build it yourself.). Basically, u are finetuning a specific area of the MAP, you adjust the fuel and timing of that cell untill its ok. The output from the engine increases, so the engine rises in RPM a little bit and the settings from the previous map cell that you had just set are transferred to the cell next to it. The same happens when you make a change that lowers RPM..irritating.
If I may make a recommendation..The AEM ecu from the US looks like a really good unit. Its still cheap, but runs much more advanced software. You can adjust the sofware to use the existing sensors and they have a very good and cheap WBO2 sensor that plugs in easily and allows you to auto tune (auto tune on the DTA was terrible).
Just my two cents...

BTW, I'm figuring the silvertop has around 140 bhp. Waste of time if you are after more power. I once switched from a 90bhp engine to a 130bhp engine. The difference in seat of the pants feeling was negligable, even though the car was 1.5 seconds quicker to sixty and I had 1200 extra RPM's to play with..The only reason that I would want to switch over to a 20V would be the IRTB's and associated feel and sound.