I will say, from prior experience on my Evo, I had the same issue. What it ended up being is that I was using an AVC-R boost controller, and a wastegate set-up. Reverting it back to the stock wastegate is what made tuning without surge possible.
That being said, is there a kit for PC IC pipe...
Lund tune, I had surge before, no surge after the IM. I am on my second of 3 revisions, so I have been able to get it to 6k, but not further yet. No surge on call driving, nor aggressive throttle acceleration. Again, I was told to use the stock TB for ease of tuning over the 350tb. I did prefer...
I'm running the gt350 IM and P1X stage 2, just used the TB adapter for the stock TB, sold my 350 TB. The install was straight forward, just have to cut a few hoses. The install was 12 hr including several runs to Napa. Hats off to you Mr 6hours lol, no shop I know has ever quoted 6 hours on that job
The 335 will fit with (I believe) a 11" rear rim. I'm staggered at 10.5 which is why I chose 305. Were I buying rims again, I would have gone with 11" rear
Sorry to hear, Lund is not an option though. I have no problem with their tune besides the surge I get in low rpm in second and third gear. But I will not pay for shitty service. I rather pay for a mediocre tune from non douchebags