I did some searching and did not come up with a specific answer to my question regarding carbon cleaning of the intake valves.

I have a 2012 F150 with the 3.5L ecoboost engine and have used CRC intake valve and turbo cleaner directly behind the throttle body every 5K miles right before oil changes since I took delivery of the truck. I'm not sure how effective the cleaner has been but have seen no ill effects in the over 120K miles I've driven it. The anecdotal evidence and photos I've seen online seems to indicate it's probably helping to mitigate carbon build up on the back of the intake valves.

Given that the F-Type R's AJ133 has no port injection there is probably some level of carbon accumulation. I want to use CRC to help keep the intake valves clean, however this engine has a supercharger on it and I'd like to avoid spraying CRC through the rotors. To bypass the supercharger I am thinking of trying to spray CRC through the charge air temperature sensor port that's located on the top of the intake manifold/intercooler housing. Has anyone tried this or have another suggestion? Thanks.

 

I am 99% sure that anything going into the sensor port you have circled will also go through the SC rotors.
I used the brake booster vacuum line on my V6 (same set-up as the V8), see here: https://www.jaguarforums.com/forum/x...2/#post2182115
No problems at all other than the mentioned "hiccup" the first two times I gave it WOT afterwards, but since then the car has run like a champ, smoother and more oomph than ever before. This tells me that the method I used, although it definitely did not bypass the SC rotors, caused no damage at all.

 

Using that brake vacuum line, wouldn't the intake on just that one bank get cleaned?

 

I personally have removed the Y part of the intake tube that connects to the throttle body. Warmed up the car to fully operating temperature, had a friend sit in the car and hold the RPMs to 2500 and I started spraying the CRC into the throttle body. No hiccups no CEL nothing. CRC can was empty in about 6-8 minutes then I turned off the car. Had it sit for about an hr and meanwhile I put back everything then went for a drive, puffs of white smoke (expected) on the first 2 hard accelerations. After that my overall experience was very pleasant. Most noticeable thing was the smoother idle. I used on Average get 300 miles per tank I know get approximately 315-325 miles per tank.

Few Notes
1. Vehicle was 2014 XFR
2. you MUST disconnect the MAFs for the car to stay on or the car will shutdown 3 seconds after starting it up.
3. I sprayed CRC intake and turbo cleaner continously (not in bursts) unless I heard the car starting to chalk up, I kept going.

Overall? very pleased with product and experience

Best of Luck
Sam