they really are takin care of me, i'm lookin for some good info about runnin an F22 in an ap1 with an ap1 ecu. i've been reading mixed reactions but all are talk, no facts. can someone help?

 

Who are you? hehe jk.. two posts in one day from El Punisher!

Now back on topic. Sweet J has a AP2 motor with an AP1 ecu. She could let you in on the details and how it performs now.

 

Ap2 long block, Ap1 ecu.

 

This is what i've been reading about, can you tell me what is true and what isn't?

1) That the ap1 transmission has different gears than the ap2 trans and will be slower than a stock one with an F22C.

2) That the engine can be taken to 9k with a good tune, but the power falls off around 8k.

3)An F22C with an ap1 ecu has more HP than it would with an ap2 ecu.

 

From my experience I think 1 is false and the other 2 are true. I think the power falls off around 8500k but I was told to not redline it. I was also told you cannot tune a stock ecu, you'd have to get aftermarket... correct me if I'm wrong.

 

Good news!

A man contacted me wanting to buy my motor so he could do some expierementing for his F20 powered dragster. Here are some of his pics, I thought it was cool. S2k Racecar Its the second set of pictures down.

 

1) We all know that the AP2 tranny has lower gearing in gears 1-4. So yes, an AP2 motor mated to an AP2 tranny will be quicker than an AP2 motor mated to an AP1 tranny(less mechanical advantage).

2) Good tune? Since you've referenced only using a stock ECU, where did you get this info? A stock ecu(pre-'06) is non-programmable.

3) That is what I've heard, but the AP1's had two different ecu's. The '00-'01's run richer than the '02-'03's. Whether or not the motor actually makes more power(and where), I cannot confirm. What is the formula for hp? Something like HP = TQ*RPM/5252. Does that look right?

 

[QUOTE]2) Good tune?

 

More on the mechanical advantage. Perhaps you've heard of AP1 folks wanting AP2 trannies? The shorter gearing helps get the car moving more quickly. Same thing with those installing aftermarket gears in the diff.... they are using mechanical advantages to propel the car more quickly at the sacrifice of top speed.

With the AP2 tranny, however, the last two gears are rather tall, bringing highway cruising rpm's back down to a very managable level.

Defender, a NY Metro member, has an AP2 motor, AP2 tranny, AP1 ecu, and 4.77's. It has been said(more than once) that he takes sc'd S's from a stop and a roll.

 

Oh sure... now you throw more variables out! I'd be inclined to let the thing run rich. A VAFC can't really tune per se, right? I had one, but can't remember what it actually can do. It can only do one thing and that is either to remove fuel or add fuel. I know it's main purpose was to lean out the mixture so as to make more power.

I guarantee they know more about that than me and my memory fails me... often.