2015-2017 5.0 Intake Manifolds Backordered. Need a solution.

[MGT350]

Helping a friend here who has a 2017 Mustang GT with a cracked intake manifold. The OEM part (FR3Z-9424-N) is backordered everywhere we've looked with no ETA.

I understand the 2018+ manifold (which seems to be more readily in stock and not much more expensive) can be installed, however there are some reservations on that front:

It seems that a tune will be needed to run it, but we'd like to avoid that to help on costs. I've also seen some kits that include an evap relocation and 2018+ brake booster line assembly - we're unclear as to whether that's needed or not. There's also the IMRC adapter harness but that extra expense isn't a big deal.

Essentially, with the OEM part number being unavailable, what's the most cost-efficient way to get his car back on the road?

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[GregO]

@MGT350
GT350 manifold with 80mm TB adapter and don’t look back.

 

[MGT350]

@MGT350
GT350 manifold with 80mm TB adapter and don’t look back.

Will this require a re-tune or IMRC adapter harness?

 

[GregO]

Plug N Play
Just some very minor rerouting of brake booster line unless you purchase the GT350 booster line like I did and a wire extension for the Evap purge valve.
Runs perfect, the rev limiter isn’t optimized with OEM 5.0 tune.
IMRC work great and the driver can actually hear the actuators cycling with the GT350 manifold.

 

[K4fxd]

Will this require a re-tune or IMRC adapter harness?

No

 

[MGT350]

Plug N Play
Just some very minor rerouting of brake booster line unless you purchase the GT350 booster line like I did and a wire extension for the Evap purge valve.
Runs perfect, the rev limiter isn’t optimized with OEM 5.0 tune.
IMRC work great and the driver can actually hear the actuators cycling with the GT350 manifold.

When you say the rev-limiter isn't optimized, you're just saying that the 350 manifold will continue to flow well past the stock GT redline and having the rev limiter increased will allow you to take better advantage of the 350 manifold?

 

[K4fxd]

you're just saying that the 350 manifold will continue to flow well past the stock GT redline and having the rev limiter increased will allow you to take better advantage of the 350 manifold?

Yes

 

[Jackson1320]

2018 manifold is plug and play also. just lockout the imrc's.

you want the cheapest fastest fix get a used 2015-2017 manifold

 

[K4fxd]

2018 manifold is plug and play also. just lockout the imrc's.

That will throw a wrench light.

 

[Jackson1320]

That will throw a wrench light.

no it will not i had this for awhile

 

[K4fxd]

If you have the CMCV's unplugged it will throw a wrench light. If you have the 18 mani with conversion cables it will also throw a wrench light unless tuned.

 

[Jackson1320]

If you have the CMCV's unplugged it will throw a wrench light. If you have the 18 mani with conversion cables it will also throw a wrench light unless tuned.

You keep your IMRC controllers off the 2017 and lock it out

 

[K4fxd]

Yep, tried it, wrench light for IMRC control circuit.

 

[GregO]

OP,
Don’t lock out the IMRC.
Don’t use the 18 manifold.
Do use a 15-17 or GT350 manifold.
The MACH 1, Bullitt and Ford Performance PP3 use the GT350 manifold on the 5.0’s

 

[K4fxd]

It seems that a tune will be needed to run it, but we'd like to avoid that to help on costs.

OP does not want a tune. The only way to use a 18 up mani is to get a tune. GT350 manifold works without a tune, just need a throttle body adapter. VMP sells one.

Used 15 to 17 manifold is another option but I'd think most will also be cracked.

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