[?] '18 Intake Manifold on '15-'17

I have the manifold and it’s not on the car yet. The imrc connectors are not the same as a 15-17. I’ve heard you can swap the harness and make it work or you can not run the imrc sand tune them out. They default in the open position and existing imrc lockouts won’t fit but some zip ties would ensure they stay open. The manifold physically fit on 15-17s. I won’t be installing mine until the procharger goes on and I will not be running the imrcs. Additionally the Evap purge solenoid is relocated on the 2018 and I will probably relocate mine below the throttle body and run the hose to one of the vacuum ports on the top. I haven’t see any dyno or track comparisons for this swap yet.

Does locking out the imrc hurt low end power?

I’ve heard the imrc are fully open at 2500 rpm

The IMRC are to help combustion for economy and emissions. The increase swirl or "tumble" to promote better combustion along with cam and ignition timing and on the 18 most likely injector timing of the DI.

What was the update on this?

FB group All Motor Coyotes, has a dyno comparison between a GT350 Manifold on a '16 GT vs the 2018 GT Manifold done by Scott Day from Houston.

https://www.facebook.com/photo.php?fbid=1772658556101848&set=gm.1819533411392795&type=3

Can't see squat on that dyno graph.

Dying to see if this works, but I don't want to spend the money on it, only to find out there's no increase in power.

Jayme said:

FB group All Motor Coyotes, has a dyno comparison between a GT350 Manifold on a '16 GT vs the 2018 GT Manifold done by Scott Day from Houston.

https://www.facebook.com/photo.php?fbid=1772658556101848&set=gm.1819533411392795&type=3

Click to expand...

Is that a closed group? Can't see the post

[email protected] said:

Is that a closed group? Can't see the post

Click to expand...

Yep

Can someone post the results of tbe comparison at least..

Here. To small for me to read the graph.

Here is the graph from that post

Interesting. Part # & price?

Just ordered mine. install is Feb 17th by Scott Day.