N55: EWG N55 Speedtech BW EFR 8374 going for 600WHP+

I got my Speedtech kit since Jan 2018 but due lack of time and finance I couldn’t get my kit installed until last March. My goal in mind is relatively modest is to make 600-620 WHP max (For safety reason) since I’m not planning on building the engine although I know with supporting mods this turbo is capable of much more.

Here some pictures of the turbo kit installation at a local shop:


Installation went very smoothly it took the shop 3 comfortable days to complete. However, there was a minor issue my turbo came with a broken BOV cover so the shop sent BOV cover to another shop to have an aluminum valve built. My recommendation for anyone considering the EFR turbo is to go ahead and order aftermarket aluminum BOV Billet cover to replace the weak stock plastic cover.


I decided to take things slowly and see what I can push the car with the current mods that I already have:
- Bootmod3 Stage 2H 93 OTS as backend flash.
- JB4.
- xHP flash.
- BMS Meth kit.
- ER Intercooler and Chargepipe.


Here are my dyno results, I’m still using completely stock fuel system (HPFP/LPFP) and stock intake/air filter/exhaust using 98 RON (93 AKI) and 100% Meth injection via chargepipe.


And here the dyno results compare to my stock turbo .. all done on the same dyno.



My 100-200 and 100-290 draggy result:




So far, I’m very happy with the results with such basic and simple setup but it’s not quite close to my goal in mind. This is as max as you can push it with stock fuel system, I tried to use very small mixture of ethanol/ race gas but even with such small mixture the stock fuel pump can’t keep up and it kept crashing. I already ordered Stage 2 HPFP Upgrade from Dorch Engineering waiting for it to arrive to push the car further. As my stock HPFP even for the current setup started to give me troubles .. can't push more than 17 PSI.

Special thanks to Terry@BMS for helping me with JB4 stuff and Jeff@Speedtech for the great turbo kit!

What I love about the current setup is on daily I’m using JB4 Map 0 (OTS flash tune only) which give me 450WHP+ perfect for daily use and on demand with few clicks I can switch the car to Map 3 ready for racing.
I’ll keep you updated once I get my Dorch Stage 2 HPFP and dyno the car with full VP109 race gas.