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.
After installing MMP Stage 3 turbos on my BMW 135i, I needed an upgraded fuel system to get the most power out of the car. I was filling up with an E40 mix of 93 and E85 , but my HPFP couldn’t keep up and my old stage 1 inline LPFP was inadequate. I needed something that could handle straight E85 fuel and not run out of pressure at 700+whp.
Having good experiences with Robert at Precision Raceworks, I decided to go with his Stage 3+ Modular Fuel Pump Kit and opted for the upgraded fuel feed line and PNP harness. This would take care of my LPFP issues. I also purchased the PR/MMP Port Injection Kit at the same time to help my HPFP.
The products arrived quickly and were packaged nicely. I’ve always been satisfied with the quality from Precision Raceworks for the price. Upgraded fuel feed line not pictured.
The first step was to install the upgraded Stage 3+ bucket that had two Walbro 450s stuffed inside. Robert was nice enough to assemble the fuel pumps in a core bucket for me to swap out. Usually you have to modify your stock bucket while mounting and wiring up the pump yourself. I jumped in the back seat and got to work.
1/26/18 UPDATE: I ran the MMP turbos hard at 28-30psi for about 500 miles and then my motor gave up. Dropped compression on cylinder #3. After removing the motor and turbos, I decided to switch my setup for various reasons. Watch this video I put together for the full scoop.
On a constant quest for more power, I found myself looking to upgrade from my stock turbos. There are a few different options available, and even some single turbo conversion kits. After doing some research, I was set on a pair of MMP Stage 3 turbos. They offer 700whp capability with OEM fitment and come at a great price. After hearing praises about Mauricio’s customer service at MMP, I decided it was a no-brainer and pulled the trigger!
I opted for fully-optioned MMP Stage 3 turbos which included a 2 year turbo warranty with the bearing treatment. These turbos require larger inlets and outlets, so I opted for MMP’s silicone outlets and aluminum relocation inlets since I already relocated things for aftermarket inlets on my stock turbos. I also ordered the turbo install kit because I wanted fresh o-rings, gaskets, etc.
After reading some DIY N54 turbo install guides, I decided to tackle the job in my garage on jack stands. This would be one of the most involved projects I’ve ever attempted on my own, but I knew it was possible.