Thinking about going to the dyno

[gtsfirefighter]

I'm thinking about taking my car to a dyno to see what kinda power it's got but I'm concerned since I have an automatic. I was wondering if the procedure for dyno-ing an auto is different than for a manual. I'm riding on the stock A340e that came with the car. 86.5 with a GTE conversion. I'll ride that tranny till it blows and either have the GTE auto I have sitting in the garage "built" or go find a manual donor and do a swap.

 

[noah89t]

my auto started shitting on me around 350hp. I did abuse it a little. I went manual and never regretted it. if you are going for numbers, have fun. If you are going to tune, stick with one dyno for all tunes since they tend to read differently.

 

[gtsfirefighter]

I just want some base numbers to start from. Then later as money allows, I might upgrade the fuel and turbo. Just want to see where it's at now.

 

[starscream5000]

There's some type of computer for the auto that you have to bypass in order to keep it from kicking down on you when you punch in the throttle in 3rd gear. I don't have an auto, but I've seen auto supra's dyno before and they had to do something like that to keep them from kicking down a gear or two... :dunno:

 

[bountykilla0118]

would manually shifting the gears be a bad idea?

 

[noah89t]

i've seen some autos dyno also and i'm not sure how they keep it from down shifting. good luck on your pulls ken.

 

[starscream5000]

would manually shifting the gears be a bad idea?

They'll kick down a gear or two if you don't have something unhooked inside the car, I'm wanting to think whatever it is, is near the passenger seat. That's about where the guys were at when they were unhooking whatever it was. Once they did that, the person on the dyno manually put it into 3rd with OD off (or whatever it's called in a Supra). It worked just like a manual in the sense that it stayed in that gear, even from a low RPM WOT pull.

The only other way to keep it from kicking down is to run the motor up to a high RPM before punching it, but that defeats the purpose of the dyno IMO.

 

[suprabad]

Unplug the ECT box. Same way you check the trans for mechanical problems. It's behind the kick-panel on the passenger side.

 

[gtsfirefighter]

I'm sure the guys running the dyno will probably know what to do but I didn't have a clue.

I know I'll need to get rid of that stock airbox first. I think it cancels out my full 3" exhaust.

 

[7MsuprO]

I know I'll need to get rid of that stock airbox first. I think it cancels out my full 3" exhaust.

That would have little to no effect on numbers IMO.

 

[s383mmber1]

Sogi mod that air box right now.