Got a buddy that has an 05 WRX with around 20k miles and has only used good gas stations, he also uses a octane booster quite a bit as well. The car is not reaching full boost and seems to be sputtering quite a bit as well. He is thinking the injectors might be a little clogged, do those OTC injector cleaners actually work?

 

gumout regane is the only OTC product I've had success with. BG44K is great also, but expensive and you have to order it online.

 

thanks for the response

 

Hard to say from your brief description of the symptoms, but I would check the plugs for misfiring. Pull out the plugs, examine for deposits and visual indicators, I would just install a new set unless they're already quite new ...maybe gap them down a tad lower, I don't know how Subies are, in many turbo cars a tighter gap & colder range plug by one step works much better than stock plugs at elevated boost.

I've used BG44K and it's excellent ...so much so that I never even tried anything else, but I have heard of a couple other good ones too. I'm sticking with the proven product. A local Nissan dealer here stocks BG44K in the parts department so you might find it locally if you call/look around.

 

B&G44K, I've used it for over 20+ years and it's great for the same problem that your friend's having.

 

Gumout regane is the best OTC product IMO, BG44K is great as I originally stated. You will notice a nice difference in engine smoothness, acceleration and even sound after using it. You engine will pur like a kitten. Regane has very similiar effects and is much cheaper. I have tried them all and I always go back to 1 of these 2.

 

THanks guys! How much is that BGK44?