We have a map sensor after the supercharger before the surge tank starts. What is this crc meant to do? clean your throttlebody? Using cleaner on supercharger might ruin the grease on some bearings..

 

 

 

What do you think the cleaner is going to do for you? The injectors normally spray the valves with gas in these cars, and there's not going to be heavy buildup on them as a result. On a DI motor, it's a different story, but in most cases on port injected cars, any type of 'valve cleaning' is simply lightening your wallet, and nothing more.

 

 

Would love to see borescope pictures of the valves before/after. Any gas has plenty of solvent qualities. There may be deposits in places, but enough to choke the valves, not very likely.

 

Spray it on a clean lint free towel and use the towel to wipe down your throttle body.

Don't spray that inside your throttle body.

With your other hand hold the flap open, and so on, then go to the other side of the car and repeat. Remember you can open your hood even further up, look up how (there's a little latch you have to press on the driver side hinge) and it will help you reach in there.

 

but the goal is for the cleaner to get to the intake valves, in which case, the engine needs to be running and the cleaner needs to enter the intake. CRC makes a dedicated throttle body cleaner for what you describe

 

Then go get a BG intake cleaning service done with those pressurized injectors at a shop. Otherwise spraying CRC might or might not lead to hydrolock, I'm not sure. I just stick to cleaning the throttle body and fuel system cleaner.

For stumbles, I would recommend these fuel system cleaners:
Gumout One N Done (one big bottle, this is the strongest cleaner), Red Line (my favorite), BG 44k (legit stuff), Techron big black bottle (this one is the weakest)

Pour one in the tank, then fill with gas, drive your car HARD. The rest of the stuff is uncleanable. Mine used to run like shiet at idle, after a couple rounds of cleaner it is nice and smooth. You should be running a fuel system cleaner with every oil change, these cars go though a lot of gas.

 

Thats just it. The CRC cleaner (and method of cleaning) is reviewed to be just as effective at cleaning the intake (including valves) as the more expensive shop (BG) methods, and far more effective than fuel additives (which get diluted with the fuel).

 

By all means, try it, but you're on your own, because not a single person here has probably done it. You won't find a whole lot of allies on this forum for additives, but let us know how it goes, preferably make a video or a few pictures and post instructions on how it's done.

 

You are correct that the E55 has no MAF sensor. You can follow CRC's directions by removing the airboxes and Y-pipe from the throttle body and spraying it directly into the TB. I will be very surprised if it makes a difference, but who knows.

 

Run some Techroline. You can get it from O'Riely's etc. Works extremely well.

 

You want this:
or this:
The cleaners with PEA are the real stuff.

 

Thanks but cleaners injected directly into the intake are more effective than gas added cleaners. No dilution when sprayed into the intake, much more cleaning power there.

 

Had a friend who had a Porsche repair shop and drove a VW Rabbit with a rusted out gas tank. The car would start missing when the injectors got clogged so he would add a bottle of Techroline and it would clean right up. Also had a buddy with an M5 with a miss he could never find nor could the dealer. He ran a bottle of Techroline and again cleared right up. It's cheap and it may or may not work but if it works it saved you time and money. Just my 02.

 

I'd be afraid that anything strong enough to clean carbon off the valves by spraying, would be strong enough to rinse the oil off the cylinders. No data, just my thoughts.

 

I ran seafoam in my intake via the vacuum line and had no I'll affect. I've run seafoam in all of my cars newer 2000+ and old (1987 560sec).

I found the results on my Sl55 to be okay. The car indeed idled smoother but, the procedure of adding seafoam to the supercharged motor kind of leaves fluid pooled up in the blower I feel like.

I added it from the vacuum line that leads right behind the throttle body.

You can use this intake valve cleaner the same way. Or wait until you pull the blower off and shoot a squirt onto the intake valves from the runner. (Which I also did.)

I can email a video to who ever would like and see the smoke show.

 

I know for a fact that the rear supercharger bearings have covers not seals, and intake air and fine grit from high flow filters (k&n) gets in there. I wouldn't want to dissolve what's left of the grease with cleaning chemicals. Without maintenance the SC has a finite lifespan as it is