A handful of people have asked me “why go single turbo now, after having upgraded twins?” Well, here is my justification with video and picture evidence.
I decided to try something a little different. It’s been a while since I’ve shared an update, so I busted out the camera and filmed a vlog style video!
I’ve decided to ditch the MMP turbos in exchange for a Doc Race single turbo kit. As you can see, the Doc Race N54 Single Turbo kit is awesome. If you’re thinking about going the same route (which I would highly encourage), be sure to use discount code N54JAKE at checkout to save $100.
PS: YouTube just changed their monetization policy and now requires 1,000 subscribers to be eligible for ad revenue. I’m only at 711 subscribers, can you help me by subscribing to my channel?
Click here > www.youtube.com/c/jakespence135
I promise it’ll be worth it! I have some cool videos on there about my 135i and will be posting tons of videos once I have my new Doc Race 6266 single turbo kit installed!
After installing my new fuel system and turning up the boost on my MMP Stage 3 turbos, I started to notice some really bad heat soak in my logs. Guessing that the car is around 600-650whp at 28PSI, I could see that my standard VRSF 7″ Street intercooler was no longer keeping up. It did a great job on my stock turbos, but I needed something a little bigger.
After doing some research, I found the VRSF 7.5″ Race intercooler. Judging by its size and efficiency ratings, it seemed like the perfect intercooler for my power goal of 700whp. I ordered it right away to help cool things down a bit. Four days later it showed up, very nicely packaged.
If you’ve been following my website, you probably read my detailed post about installing a 335is/550i clutch after my OEM clutch wore out. However, with MMP Stage 3 turbos on the way, I knew the 335is clutch wouldn’t hold as I turned up the boost. With a goal of 700whp, I decided to replace it with a SPEC Stage 3+ clutch and retain my MFactory single mass flywheel.
Since I just installed an MFactory SMFW about 20k miles ago, I decided to reuse it because I knew it was in good condition. All I had to do was purchase a SPEC Stage 3+ clutch with OEM or MFactory flywheel configuration so it would mate up properly. If I didn’t already have the MFactory flywheel, I probably would’ve bought a SPEC flywheel to go with the clutch. However, I’d rather save some money when possible!
Since the transmission was going to be removed, I wanted to refresh a few things at the same time. I noticed my shifter developed some side-to-side slop so I decided to upgrade the bushings. The car has almost 120k miles and still has the OEM transmission mounts, so I knew those could be replaced. I’ve also never servied the rear differential and noticed it was seeping a tiny bit of fluid. Might as well replace the rear pinion seal and flush/refill the fluid!
Late Model Throttle was hosting a dyno day at their shop in Waukesha, Wisconsin. Knowing that there would be a DynoJet and some cool cars, I decided to sign up!
The car was strapped on and put down 448whp and 501wtq with SAE correction. However, all of the N54 guys use STD correction and that converts to about 468whp and 523wtq!