I was wondering if anyone with an a4 is running a tr224 without tuning?

 

I believe you will have to drill out the trotle body blade some to get the car to idle, some of the more experienced guys could tell you the size.

 

I figured I would have to do that and maybe set the idle.I was just wondering who was running them?

 

I know of a few different people with an A4 and the TR 224 without tuning and their cars ran great without problems.

 

Fow a While My SS Had the TR-224 Cam without tuning and a slightly larger TB hole.

Idled Okay. Startups(cold) were a bitch, stoplights (had to put the car in neutral) but other than that it drove fine. As long as i prevented those two things above, the car would not stall.

oh, and at that factory idle...those A4's have one hellllll of a lope <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />

 

I had to increase the hole to about 1/4" to eliminate the surging on a 224/224 @ 114 LSA. I also flipped the idle screw around to make it easier to adjust to about 800 rpm.

You will get SES codes of overspeed and misfire without tuning, but it wont affect power or operation.

You have to drive two footed (one on the gas and one on the brake) until the engine has warmed up a couple of minutes. After that it will have a stable idle (assuming you have a 3000+ stall converter).

I found that you get a cruise control effect with the IAC solenoid connected. Another way to describe this problem is that the engine is slow to return to idle. Just unplug the IAC connector from the solenoid on the throttle body while the rpms are over 2,000. Then adjust your idle in Drive for about 800 rpm. Leave it unplugged.

Power increase is awesome, but you will eventually need LS1 edit to raise the shift points and rev limiter to realize full power potential that a 224 cam develops at 6500 rpm. Ls1 edit can also keep your SES light off by raising your idle speed to 850 rpm and deleting misfire codes.

<small>[ November 11, 2002, 12:02 AM: Message edited by: gto69judge ]</small>

 

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by gto69judge:
<strong>
You will get SES codes of overspeed and misfire without tuning, but it wont affect power or operation.

</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I've found that a lot of A4's will unlock the converter if it throws a misfire code.

Very interesting about unplugging the IAC solenoid.