06-12-2012, 09:50 PM
Put it this way, IMHO, versus a XUD9, the ports are fecking TINY...
Mainly exhaust ports... But there's no point in working on exhaust ports if you're going to keep the stock elbow etc... It needs to be 2.5+" all the way back - stock exhaust parts have no place on over double stock power cars...
Sorting the flow past the turbo is the biggest priority, then concentrate on the head... Hate to say it, look to what the TDi guys do, they're getting places with headwork...
Mainly exhaust ports... But there's no point in working on exhaust ports if you're going to keep the stock elbow etc... It needs to be 2.5+" all the way back - stock exhaust parts have no place on over double stock power cars...
Sorting the flow past the turbo is the biggest priority, then concentrate on the head... Hate to say it, look to what the TDi guys do, they're getting places with headwork...