Originally Posted by HHMCS

Bit late to the show on this thread, but when does lag start to become an issue? Would a 45/60 compressor wheel be pushing it or does the extra mm not make any noticeable difference?
Only looking for 240whp from my N18s with upgraded IC, exhaust, clutch and lightened flywheel. Light daily use and fair amount of track.

Originally Posted by jetsr6

You would be fine with a JCW turbo. I made 244whp with one on a n14. Then no turbo lag to worry about.

Originally Posted by HHMCS

Yeah, I know it
's the easier option but I'd have to get it 2nd hand with unknown history and may need a refurb etc. By the time I've done that I'd either be able to get a new or hybrid my own with capacity to increase power later if I want to.

Originally Posted by Yupetc

I'm getting close to getting a turbo upgrade now. Bought the car used, but pretty much redid EVERY component around the engine as far as cooling, timing assembly, and turbo plumbing. Currently I'm still running the stock N14 MCS intake. Below are my upgrades:
- oil catch can
- ebay knock-off FMIC
- CNT catless DP
- Muffler Delete
- NoiseMaker Delete
- Alta Diverter Valve Spring + spacer
- Newest version OEM Diverter Valve
- JCW square-style turbo header manifold
- I'm in Texas, I only use 93-Octane gasoline

I plan to do these:
- JMTC's S42 turbo
- RPM stage 3 tune
- DDM intake with hood scoop
- 1-step colder spark plugs

MY QUESTION IS:
Can my current mods support the intended upgrade WITHOUT CHANGING OUT MY STOCK CAT-BACK EXHAUST? I'm asking this because I really don't want a noisy car, don't want the pops-n-bangs either. The way the stock MCS sounds is already a bit on the loud side for me, and letting it go any louder would ruin my quiet life. I even plan to add a 100-cell high flow catalytic converter to the CNT DP section to take out some element of that noise. Thanks fellers!

Originally Posted by Jeremyj

quick question on the JMTC S42 Turbo install... can you run this turbo without an u/g downpipe? I know its not optimum but I just dont want to go into limp mode. I will be getting a tune and catless soon (6 months) I already have an u/g intercooler, intake and u/g hoses. buying colder plugs in the next week. The stock turbo on my S was damaged in an accident so mini dealer is putting it in.