RegisteredUser of a Lotus
Hey Guys, So I've got my 2013 Evora S IPS and I've been doing some modifications. I had a 2bular header set up installed and a tune done at a local tuner with a mustang dyno. I'm at the point where I feel like im stuck. On the one hand I have my car that was running perfectly before, now tuned with 2bular headers and the stock exhaust. The sound is far better than it was before and after the tune it got, it seems like its faster on the top end but as i mentioned before in this post, it doesn't feel as fast as it did before and I keep getting a CEL for p0420 code for bank 1. The tuner is confident he can tune that out but I don't know. I also noticed that when on the highway for an extended period, the car won't downshift from 6th when i slam the gas as it did before i did all of these changes. I feel like it has something to do with the tune but have no idea really. After reading your responses and doing some research, I think the solution would be to either put the stock tune and manifold back on and just change the exhaust to a plack or similar system, or keep going and finish what I've started by getting either a plack or similar and upgrading the pulley with the Monkey Wrench Racing design at 66mm so I can get that umph back. Does anyone have experience with this? Any thoughts on what direction I should go?