Moin, I am currently converting Sierra with the good old OHC engine (Pinto) to turbochargers. Since I want to do everything perfectly, the exhaust line should of course be optimized, which is the A and O for a good response behavior. The series casting manifold naturally eliminates because of far too small cross section. Jetz asks me the question what is better: Nen 4-2-1 fan manifold because of even cylinder filling or rather as short as possible, 4 pipe stubs with low flow 45° pieces on as short a distance as possible in a 4-1 funnel and there directly the loader ran. I can buy the compartment ready for 250, is also not too very wound snake nest but about a half meter on which well temperature = exhaust enthalpie flutes goes until it goes into the turbine. The pipe pieces and the accumulator fry together should also not be expensive, so from the price eats even no matter. (with price anyway is second priority, with the project probably in total 5.000 only for M otor+Turbo+Range fried) I thought about the K03 from the 1.8T from VW/Audi, which is with 200 hp already at its poop limit but for that has the super-flinky response dynamics. Or would the K04 be better? Or a completely different one? I pick up 1 bar for 200 hp @ 5500rpm, overboost vlt. 1.2 bar for 220 hp. THX & Greetz