Another post about coils...but this one is good. Read it. Lets backtrack, Bimmer Life first to release any kind of "upgraded" coil. Precision Raceworks coils released shortly after both are great sets of coils, back by some really awesome companies and people. I finally decided to order the PR set on my birthday, June 16th. I messaged Robert about a set, told him it was my BDay, I purchased and next day I had the set(I only live 3 hours from him). Installed along with a new set of 95770 @ .026 gap, started up, working great. Few days later the MHD option was released. Awesome, lets check it. Flashed the car and everything was going great. Then 3 days later I decide to get on it, and misfire. WTH? Pull codes, 4,5,6 misfire. Clear it keep going. Again, and again. Then 2 days after this, blew a Mosfet. Great, MSD80 POS. Anyway had it towed to a friends show and the mosfet replaced. Get the car back, still have 4,6 Misfires. We check them out, the wires from the PR set had popped off, no biggie. Crimped them with pliars, re attached. Back on the road. Get on it, boom. #3 misfire. At this point I'm like WTF? I start contacting people. Robert, Justin. All for assistance. Both were there for me to help anytime I asked a question. I replace the plug in #3, go out to test, boom #6 misfire. Replace that plug, still misfire. Move the coil, still misfire. Ok, great. My injectors(I still had index 5). Replaced them injectors, reset all adaptations. Get on it, #4 misfire!? REALLY!? Replace that plug, #5 MISFIRE, At this point I'm so annoyed with these coils, I want to take them off. Nothing is working. I just want to enjoy my car. Robert gets me to test the coils ohm resistance, all fine. Robert and Justin think its my Mosfets. So I send Robert my DME to replace all the mosfets to New Fairchild ones. At this point I have pulled the coils off the car, as it was so bad, just everyday driving would misfire. When I was putting the stock coils back on, I did a compression test just to make sure it wasn't a jacked motor. Compression 165/170 across the board. Then I start thinking, and contact Alex Fuller. Give him a rundown of whats going on. He offers me a deal I cant refuse on his set of coils. He gets me his coils. I installed them(10min) install, wow. I also installed a new OEM set on n20 plugs, left the gap alone. Started up and smooth. Very smooth. Ok, lets go for a drive. PR set was very smooth as well on start up. Let the car warm up. At this point ive flashed back to my pump gas map thinking something is still wrong. Now this is with Bimmerlife coils, new mosfets, new injectors, new plugs. NOTHING SHOULD GO WRONG. My oh my. My car had come to life again. Id never felt it pull so hard on pump gas. I was FLOORED!!. Ok so give them a few days on driving, same as my PR set. All fine, NO HICCUPS PERIOD. Go back to my 23psi e40 map. HOLY GOD. I know my car isnt that fast, but its the fastest I've ever driven. Bottom line here, my car did not like the PR coils, and LOVES the BL coils. If you want a set of coils, you cannot go wrong with the BL coils. Both companies are bad ass, both guys who run them are smart as hell, and helpful as hell. I dont want to turn this into a pissing match. Just sharing my experiences, and suggestions. From my experience and my vehicle, the BL coils work better for me.