Reddit reviews 3M 39089 Fuel System Tune-Up Kit
We found 2 Reddit comments about 3M 39089 Fuel System Tune-Up Kit. Here are the top ones, ranked by their Reddit score.
Improves fuel economy, acceleration and performanceProfessional formulaRequires a few simple hand-toolsAs easy to perform as an oil change
Gumout makes a DIY injection kit, but if they don't follow the instructions the bent pistons can happen. I could not find the Gumout kit but [here] is a similar 3M kit.(http://www.amazon.com/gp/product/B009PPL604/ref=pd_lpo_sbs_dp_ss_3?pf_rd_p=1944687462&pf_rd_s=lpo-top-stripe-1&pf_rd_t=201&pf_rd_i=B00BAW3Y5A&pf_rd_m=ATVPDKIKX0DER&pf_rd_r=0TBQHEDHE6XRW2HMMCAX)
Yeah, it does. Theoretically if you run the car at 3000+ RPM for a while (30 minutes) every so often it's not supposed to happen. You can manage it by getting a spray-in cleaner every 30K (about $100-175 for a shop to do maybe?) or you can go whole hog and have the cylinder heads media-blasted every 60-70K (about $300-600 depending on what all they do). I mean I've had the dealer quote $1100 but they also change the oil and tires and all kinds of shit along with the intake cleaning.
Personally I had the media-blast done at ~70K and I will run the spray through it every six months or so as a maintenance. There's a couple of videos out there where someone will spray and then run a camera down the spark plug hole and it's cleaner but not as perfect as a media blast. So I'm thinking it's not going to clean off years worth of carbon but it might keep the buildup from forming if you keep after it.