Anybody do a CRC spray-in intake cleaner yet?

garyo · January 16

I’m at 30K and would like to do one. Saw a video about it, seems simple enough. Any opinions on it or any “gotchas” I should be aware of? I do have the GM performance upgrade installed. (GM CAI, cat-back exhaust)

Thanks

garyo

calgator73 · January 17

Unless you're having a problem....why?

Naughty Donkey Performance · January 17

So easy to remove throttle body and clean it up if needed, I have not done any spray in cleaner, at 44k miles my TB was a little dirty, I have had a oil catch can on it for at least 20k miles of it.

Replaced it with a Jet Performance TB, and MAF.

Factory one is cleaned up and packed away.

If you remove it (10 mins) you will KNOW that it is cleaned, 10mm socket and phillips screwdriver is all you need plus a can of TB cleaner and a couple rags.

garyo · April 19

Since I did not get any feedback, here is what I did...

Warm up engine. Also, I have the factory performance upgrade. Remove MAS from air intake duct (leave it plugged in), wrap in plastic bag (keep plastic away from the element or it will melt the bag and ruin it) and move to front lower air box so it doesn’t move around. Remove air filter as you spray the cleaner directly into the air intake. Set up your pedal assist device, start engine. It will not want to idle or be very rough. Push pedal to about 2K RPM and set pedal assist device. When the engine is nice and steady at the desired RPM, start spraying cleaner into the air intake in bursts of 3 or 4 seconds. Continue until the spray can is empty. You may need to readjust the pedal assist device to maintain 2 to 2.5 K RPM, I did not have to.

When the can is empty, rev engine three times not to exceed 3.5 K RPM. Let engine idle or as close as possible for one minute then shut off. Carefully clean out air box, reinstall filter and MAS. Check all connections then let engine heat soak for about an hour. Then, go for a good drive and everything should be okay, but maybe still a little rough. Next day drove it again so I could change the oil and it ran just fine. I would recommend changing the oil and filter after. If a check engine lite is set, just turn it off with a scanner. My truck did not set a DTC.

GETGONE · April 20

You're supposed to spray it directly into the throttle body, not the intake air tube. Seafoam has a J hook straw that you hook over the opening of the throttle body and then slip the boot back over it to keep it in place.

ElbowJoe · April 20

I agree with GETGONE. I just did this last weekend on my 2021 Silverado LTZ. A little over 33K on the clock. I actually did both the aerosol SeaFoam GDI intake valve cleaner and the CRC GDI intake valve cleaner back to back. The SeaFoam aerosol has a slick straw and curved plastic sleeve that helps to route and protect the straw under the rubber seal in front of the throttle body. I ran the SeaFoam through with help from my son on the throttle. Let it sit as instructed and did the high speed passes. The straw for the CRC does not have the same functionality as the SeaFoam straw, so I made a little hack to enable the SeaFoam straw to be able to be used on the CRC spray nozzle.

Took some heat shrink tubing and shrunk it it to the SeaFoam straw at the end. That made the straw the correct diameter to be inserted into the opening in the CRC nozzle. Once installed, I used the same procedure with the CRC and ran that through the system following the CRC instructions. The truck seems to have more acceleration and quicker response. (Perhaps this is just my imagination.) At any rate, I am hoping these products were able to remove some of the potential carbon build up from the intake valves. The way I look at it, they can't hurt anything.

I followed this up by installing a $35.00 Evil Energy catch can (purchased thru Amazon). (I thought the price was exceptional and the hardware looked very nice as well.) I would recommend it - although I ended up building my own mounting bracket as the one that came with the kit was not sufficient for my mounting location.

My final mod this weekend was replacement of my stock muffler with a Borla Pro XS 40359. I was not looking for anything too loud - just something where I could hear that I have a V8 when I stomp on it. Although Borla tried to sell me a $1,500 full cat back system, I am very happy with the sound that I have with this muffler swap and it only cost $112 thru Summit + install cost at my local muffler shop. I couldn't be happier with the results.