TX01Z

iTrader: (1)

For A4 cars, Comp cams says their 216/220 duration cam requires computer modifications, however their 212/218 duration cam does not.

What needs computer tuning because of the higher duration? Idle rpm only, or other things as well?

Thanks.

Grimes

iTrader: (3)

the things you mentioned and also to get the most power out of the cam. But the 216/220 is small enough that you could get away without it. Do you have an aftermarket converter for your car? At least have one put in before a cam swap.

TX01Z

iTrader: (1)

SS3200. Was Comp cams referring mainly to the idle rpm?

ArcticZ28

iTrader: (14)

Regardless of any aftermarket cam you put in, you will need to tune it. Granted, you will have to make less/smaller changes with a smaller cam, you still need to make them. The computer is programmed to know only about the stock cam, nothing else.

WhosNXT

Agree

PREDATOR-Z

Even the stock cam can use better tuning. On my vette, I gained 12rwhp by tuning the stock one.

2xLS1

iTrader: (25)

I actually had both of those cams on 114 LSAs in A4 cars many years ago. The 216/220 would set enough misfires to keep the converter from locking while the 212/218 did not.

TX01Z

iTrader: (1)

How do you tune out the misfires?

2xLS1

iTrader: (25)

Edit the misfire tables with tuning software.

KEE AUDIO

iTrader: (65)

My thunder racing 220/220 .551 .551 on a 114 needed tuning. Not much bigger than the one your describing? It would send a random multiple misfire code for no apparent reason from time to time and would stall at traffic lights if it sat still long enough. You would've thought it was a much bigger cam the way it behaved. All that with a Pro Torque 2800 stall. Much nicer after I had it tuned.