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CRBN BLU
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2002 Toyota Celica GT

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Hampton, VA
May 19, 10:29am - #181067 
Best way to dyno an auto?

I know that in most cases, manuals dyno in third gear for the most accurate hp/torque curve. What would I do for an auto? We just got a new shop with a dyno and me and a couple buddies were thinking of rolling down to check it out, and I want to dyno my 02 GT for shits and giggles. Do I leave it in 2nd, 3rd w/o Overdrive or what?


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CRBN BLU
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May 19, 4:28pm - #181068 
I was watching Two Guys Garage this afternoon, and they dynoed a Ford F250 Super Duty automatic. While on the dyno, they ran it in 3rd with the torque converter locked up. How do I lock up the torque converter?


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May 19, 8:42pm - #181069 
Ok, answered my own question, at least one of them. Here's one someone might know: Which fuse deals with the transmission/drivetrain etc.?


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calidrifter
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May 19, 11:56pm - #181070 
Do not do lock up the torque converter. The auto celica is a four speed right? that means the best gear to dyno it in is 2nd. I think the F250 is a 5 speed Auto thats why they left it in 3rd. Do not use overdrive it will fuck up all the readings cause it adapts to the pressure put on the wheels and you will get weird reading. Afriend of mine threw it into OD and on the 1st run got 98 then on the second run he got 175 without it he got a steady 125(99 Si).


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tru_Asiatik_Pride
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May 20, 12:47am - #181071 
^^listen to the dyno expert thumbsup
serg how can you leave it in 2nd gear if its an auto???doesnt it shift automatically hence its an auto??? confused confused

we should have dynoed my car when i took off the kit and rims maybe next time smile

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Speed4TheNeed
Caleb
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2000 Toyota Celica

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May 20, 8:35am - #181072 
dynos are hardly ever accurate anyway.

the only real accurate way to do it is to use the same exact dyno with the same exact dyno settings with the same exact car.

there are so many variables that it hurts to think of them all...that said, you can stay within about a 10-20 whp 'margin' between different cars and different dynos..but then again a 10-20 whp difference is a LOT.

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Deseck
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San Antonio, TX
May 20, 10:23am - #181073 
Originally Posted by tru_Asiatik_Pride
^^listen to the dyno expert thumbsup
serg how can you leave it in 2nd gear if its an auto???doesnt it shift automatically hence its an auto??? confused confused



you could just drop it to 2.

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ricenit
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May 20, 1:25pm - #181074 
i just dynoed my auto this past weekend and i think he did it in third...i wanted to cry though because it sucked puke . Peak hp of like 132 and 95 ft lb of torque. (i have a gts) it topped out at 122 in third gear...is that right?????

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RicePowered
ECelica Staff
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South Jersey
May 20, 1:30pm - #181075 
yeah that sounds about right, I'm pretty sure.

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May 20, 5:41pm - #181076 
where could I get a dyno done and how much would they usually cost?


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CRBN BLU
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May 22, 6:06pm - #181077 
I don't know about where you live, but here, it'll cost me $75 for 3 runs without any tuning in between.


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Krayze
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Pittsburgh, PA
May 22, 6:56pm - #181078 
Originally Posted by calidrifter
Do not do lock up the torque converter. The auto celica is a four speed right? that means the best gear to dyno it in is 2nd. I think the F250 is a 5 speed Auto thats why they left it in 3rd. Do not use overdrive it will fuck up all the readings cause it adapts to the pressure put on the wheels and you will get weird reading. Afriend of mine threw it into OD and on the 1st run got 98 then on the second run he got 175 without it he got a steady 125(99 Si).


what he said is right.


but btw they never made a si in a auto alwasy 5 spd.


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darksidecelica
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May 22, 10:46pm - #181079 
^^^thats what i thought too

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ricenit
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May 23, 5:21pm - #181080 
yep cost me 75 for three runs too smile

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