Noticeably slower...

[Jim Lewis]

Stopped using my AC, idle issue went away....just dynoed it today (again, third time this week), way cool to be running the Hot Rod U portion of the school.....

[TXRLU]

Originally Posted by Jim Lewis

Stopped using my AC, idle issue went away....just dynoed it today (again, third time this week), way cool to be running the Hot Rod U portion of the school.....

Did the HP drop after each run?

[Jim Lewis]

Originally Posted by TXRLU

Did the HP drop after each run?

Sure, as heat builds up, HP drops, very normal situation. We let it cool down over our lunch time (30 minutes) and did a fresh run and posted 4 hp more (222 vs 218).

[Redline686]

Thats a 3rd gear run. The speed says that it stopped at around 100 which is the top of 3rd, that ain't no 4th gear run.

[Jim Lewis]

Originally Posted by Redline686

Thats a 3rd gear run. The speed says that it stopped at around 100 which is the top of 3rd, that ain't no 4th gear run.

No, not a 4th gear run - 4th gear turned about 217-218. I printed the peak HP results, which were in third. My buddy, who was running the dyno controls with me, typed in the wrong gear info.

[Redline686]

oh ok, what mods do you have again?

[Signals]

Originally Posted by Jim Lewis

Stopped using my AC, idle issue went away....just dynoed it today (again, third time this week), way cool to be running the Hot Rod U portion of the school.....

Looks like the max HP was right at the end of the run. How do you know you couldn't have made more power? If it had been a 4th gear pull, could it have gone higher, or did you hit the rev limiter?

Also, I haven't noticed any idling problems with A/C on. It does behave a little differently, though. When approaching a stop, after depressing the clutch, the RPM normally falls slowly to about 800 (normal idle). With the A/C on, the RPM will fall to about 1200 and hang there for a second or two, then go down to 800. Maybe the computer is trying to keep the car from stalling because of the extra drag on the engine?

[Jim Lewis]

Originally Posted by Signals

Looks like the max HP was right at the end of the run. How do you know you couldn't have made more power? If it had been a 4th gear pull, could it have gone higher, or did you hit the rev limiter?

Also, I haven't noticed any idling problems with A/C on. It does behave a little differently, though. When approaching a stop, after depressing the clutch, the RPM normally falls slowly to about 800 (normal idle). With the A/C on, the RPM will fall to about 1200 and hang there for a second or two, then go down to 800. Maybe the computer is trying to keep the car from stalling because of the extra drag on the engine?

Several guys, including me, reported stalling and weird idle problems when using the AC after installing the AEM short ram.

The idle concern you're talking about is related to the electronic throttle as it detects road speed - RPMs won't drop fully until you're stopped.

I simply quit using my AC (except last night for a few miles while headed to a BBQ with the wife, no problems then) and the issue hasn't resurfaced. In my spare time (working doubles right now), I'll contact AEM and let them know what's up and see if they have a plan.

[yrethguad]

When I got my car w/ intake the idle jumped around. I reset the ECU and it was smooth. Perhaps try similar? $.02 inserted.

[Get_Sum]

just wondering. those who have the torque braces do you guys feel the difference and when do you feel it most