Re: N/A 74mm Throttle Body Upgrade Guide
There have been NO reported problems regarding a 74mm TB and a NeedsWings 3" CAI, so I cannot see where the 74mm housing could cause any problems.
I myself have been running a 74 with NW CAI with EC tune for over 5 years now, no issues.
( 74 mm = 2.91339 Inches )