Hey everyone - hope all is well.
Recently picked up an NA-T Non VVTi setup. (I am a complete single turbo / NA-T Virgin so gather info.)
I believe the engine had a bottom end rebuild by whifbitz a few years back, and has clevite Big end bearings. It has been tuned to a 2.5" exhaust so will prob go with whifbitz 3" setup now and get re-tuned. Or would i be better off sticking with 2.5"? Only thing i don't like is going 3" DP into 2.5" midpipe.
From what i can gather so far, it's standard over the top Intake manifold, whifbitz exhaust mani with turbosmart wastegate, 3" downpipe, screamer pipe, stock injectors and coils. Aeromotive FPR, Link ECU and 3 bar map sensor, NA Oil pump. Basically the full whifbitz NA-T setup c/w Side mount intercooler. Aftermarket oil cooler, HKS BOV.
https://www.garagewhifbitz.co.uk/garage-whifbitz-na-t-supra-turbo-kit/
So the engine is currently on the stands but will be used for drifting so quite alot of mid-high rev range action in short bursts, can you guys recommend anything to do while it's out of the car? No, i don't want to forge it.. (yet anyway) but i've heard that changing to GTE Headgasket might be a good idea and not sure if anything else will be worth doing before it goes back in? Obviously i'm mindful that it's stock block so don't want to overdo it by adding uprated injectors, coils etc as i think 420hp is more than plenty for the use i'll get
In regards to the screamer pipe, i think it's going to be an issue potentially for noise limits, what's best option in regards to this?