Best tune for 2018 manifold swap keeping IMRCs on a 2016 GT

ecohorsie

Active Member
Joined
Dec 18, 2018
Messages
30
Reaction score
2
Location
Wallingford, CT
First Name
Pete
Vehicle(s)
2016 Mustang Ecoboost
Going to run a nonported 2018 intake manifold on a 16 GT manual and want to keep IMRC . Who's best tuner for this?
Was considering
a SCT X4 with custom tune for $479 from Steeda. Anybody have any experience with it?
But my gut says a custom tune would be better.
Not racing just a fun cruiser. Mods are axlebacks and C&L CAI. Trying to maintain low end torque as well as the added top from the 18 mani
Advertisement

 

jacknifetoaswan

Well-Known Member
Joined
Jan 6, 2016
Messages
1,173
Reaction score
486
Location
Charleston, SC
Vehicle(s)
2016 Race Red Mustang GT Premium Performance Pack
This was my original intention, but every tuner told me to just lock the IMRCs out. They're just not worth the trouble, and in my experience, you do NOT lose torque.

I love Steeda, but I wouldn't trust them to tune my car. I used Palm Beach Dyno, and they were very easy to work with. I had some slight surging with the first tune they sent, so we datalogged a couple times, and they were able to get it right very quickly. Turn around for me was about an hour.

JR
 

NightmareMoon

Well-Known Member
Joined
Nov 22, 2015
Messages
3,879
Reaction score
2,430
Location
Austin
Vehicle(s)
2016 Mustang GT PP
Vehicle Showcase
1
I did a VMP tune and kept the IMRCs they haven't been a problem at all. You may still loose a little torque from the intake anyway, but the top end is strong like bull.
 

[email protected]

Well-Known Member
Diamond Sponsor
Joined
Aug 8, 2019
Messages
841
Reaction score
307
Location
Florida
First Name
Steve
Vehicle(s)
2017 mustang gt
Keeping the IMRC is always an option but like what was previously said, its typically better to always delete them. They are more of a headache than its worth. Either way if you decide to keep them or not, Palm Beach Dyno or Lund Racing would be the options I would suggest. They both can tune with or without the IMRC without issue and have your setup making great power across the range. We also sell the X4s. If you have any questions about the process, feel free to shoot me a message. Lethalperformance.com
 

Popo5ohh

Well-Known Member
Joined
Aug 8, 2016
Messages
436
Reaction score
109
Location
Northeast pa
Vehicle(s)
16 gt
Mine are locked tuned with lund,who told me to lock them.
 

GregO

Well-Known Member
Joined
Mar 5, 2018
Messages
831
Reaction score
393
Location
Illinois
Vehicle(s)
S550 GTPP
Going to run a nonported 2018 intake manifold on a 16 GT manual and want to keep IMRC .
I know you didn’t ask but give the GT350 manifold with the stock 5.0 80mm TB some thought. IMRC are plug and play.
I lug my setup down to 1500 RPM’s in 6th gear at about 35 to 40 MPH with no bucking and clean throttle response.
The notion there’s a noticeable low RPM torque loss is really not accurate. As of now I’m on the stock tune with the GT350 manifold. Honestly, it rips ass as it is. It took a hundred miles or so for the relearn, so far so good.
The 18 manifold isn’t a clean install like the GT350.
Your car your choice, I get that.
 

beefcake

Well-Known Member
Diamond Sponsor
Joined
Oct 18, 2014
Messages
10,124
Reaction score
3,194
Location
Bethel
Vehicle(s)
2015 Ford Mustang
I know you didn’t ask but give the GT350 manifold with the stock 5.0 80mm TB some thought. IMRC are plug and play.
I lug my setup down to 1500 RPM’s in 6th gear at about 35 to 40 MPH with no bucking and clean throttle response.
The notion there’s a noticeable low RPM torque loss is really not accurate. As of now I’m on the stock tune with the GT350 manifold. Honestly, it rips ass as it is. It took a hundred miles or so for the relearn, so far so good.
The 18 manifold isn’t a clean install like the GT350.
Your car your choice, I get that.
18 non ported mani on our blower car made more power than a ported gt350....
 

jacknifetoaswan

Well-Known Member
Joined
Jan 6, 2016
Messages
1,173
Reaction score
486
Location
Charleston, SC
Vehicle(s)
2016 Race Red Mustang GT Premium Performance Pack
18 non ported mani on our blower car made more power than a ported gt350....
I wish I had gotten mine ported before installing.

JR
 

GregO

Well-Known Member
Joined
Mar 5, 2018
Messages
831
Reaction score
393
Location
Illinois
Vehicle(s)
S550 GTPP
18 non ported mani on our blower car made more power than a ported gt350....
Ok,
but this is about retaining the manifold actuator function and I offered up a plug & play option. Nothing more nothing less.
 

MyStang

Well-Known Member
Joined
Dec 30, 2015
Messages
239
Reaction score
244
Location
Michigan
Vehicle(s)
2015 GT
I would highly recommend going to HP tuners forum and start reading up on the manifold swap. I'm running the Ford power pack 2 with the GT350 throttle body with a 18' non-ported manifold with active IMRCs. I went with HP software and couldn't be happier.
 

Grimreaper

Well-Known Member
Joined
Jan 23, 2019
Messages
238
Reaction score
82
Location
Dallas
Vehicle(s)
2017 GT
I would highly recommend going to HP tuners forum and start reading up on the manifold swap. I'm running the Ford power pack 2 with the GT350 throttle body with a 18' non-ported manifold with active IMRCs. I went with HP software and couldn't be happier.

I second this. Its not difficult to make the tune changes. And you can learned and finesse the driving habits as you learn more too.
 

K4fxd

Well-Known Member
Joined
Apr 2, 2020
Messages
4,128
Reaction score
2,252
Location
NKY
First Name
Dan
Vehicle(s)
2017 gt, 2002 FXDWG, 2008 C6,1965 Sunbeam Tiger (Stolen, Elk Heart Lake)
18 non ported mani on our blower car made more power than a ported gt350....
If that is normal I wonder why Ford is using the GT350 manifold on the mach 1, or am I wrong on that?
 

SensesFail

Active Member
Joined
Jul 16, 2021
Messages
38
Reaction score
11
Location
SFL
First Name
Stavy
Vehicle(s)
2016 GT
I've got mine locked out on the stock manifold for 2016 GT, Palm Beach Dyno did the tune for me and I've had no issues, they even got ride of those stupid DTC's p2004 and p2005 because the runners were stuck open.
 

GregO

Well-Known Member
Joined
Mar 5, 2018
Messages
831
Reaction score
393
Location
Illinois
Vehicle(s)
S550 GTPP
because the runners were stuck open.
The early 5.0 manifolds have weak plastic runner actuation rods.
The GT350 has steel, another reason to consider this manifold.
I’m unsure what material rod is used on the 18+ manifold ?
 
Last edited:
Advertisement

 
110 - Moddiction - 1
Advertisement
Top