Single turbo s55 tuners?

chetrickerman · 02-26-2024, 07:42 PM

Quote:

Originally Posted by -Eidos

I'm curious how a ported cylinder head complicates things?

It changes the airflow across the engine, which messes up the airflow model inside the DME and requires the tuner to compensate/adjust for that. Figuring out how to do that and what to adjust is a massive PITA. Same applies if you install Schrick cams.

-Eidos · 02-26-2024, 07:55 PM

Quote:

Originally Posted by chetrickerman

It changes the airflow across the engine, which messes up the airflow model inside the DME and requires the tuner to compensate/adjust for that. Figuring out how to do that and what to adjust is a massive PITA. Same applies if you install Schrick cams.

Ah. Thought it related to the O2s for some reason. Makes sense! Thanks!

JustAnothaM4 · 03-08-2024, 04:51 PM

Quote:

Originally Posted by b_w.

only issue with Bend is they will not tune a single bank setup. Not sure how the big boost kit is setup. I wanted to use them on my 4N setup.

Not sure when you spoke to Ian @ Bend but, they have recently confirmed they can tune MHD with single bank turbo setup.

JustAnothaM4 · 03-08-2024, 04:54 PM

Quote:

Originally Posted by reign

Chris from Motiv is extremely thorough and helpful

Chris @ Motiv did the tuning on my turbo setup running EFR8474. Took some time to get dialed in..I would like the very low end to be as smooth and responsive as stock but, we shall see.

pxscu · 03-08-2024, 05:55 PM

Quote:

Originally Posted by JustAnothaM4

Not sure when you spoke to Ian @ Bend but, they have recently confirmed they can tune MHD with single bank turbo setup.

supposedly they won't mess with OEM E-gate on upgraded single, unless they just wanted to add another reason not to tune my car

b_w. · 03-08-2024, 07:44 PM

I went with Chris at motiv. Hope to be up and running in a week or two on MHD.

Conversations with Bend were this fall and they would only tune with o2s pre turbo in the manifold.

SnoozieToofs · 03-10-2024, 01:37 AM

Quote:

Originally Posted by pxscu

supposedly they won't mess with OEM E-gate on upgraded single, unless they just wanted to add another reason not to tune my car

What’s an e-gate?

pxscu · 03-10-2024, 01:43 AM

Quote:

Originally Posted by SnoozieToofs

What’s an e-gate?

oem electronic wastegate actuator

b_w. · 05-18-2024, 09:48 AM

Been a month or so messing around with the single turbo 4n kit. Chris at motiv has been super helpful getting it running on MHD. Had it out to the track a few times. Buttery smoothe and fast as hell. Not a big power / torque build but feels way better on track with the power band moved up compared to stock. Think gts +. Always quick on power and sounds amazing.

Can't recall who was working on the new Vargas single turbo kit...can't find the post but curious how it's working out?

03-08-2024, 07:44 PM	#50
b_w. Lieutenant 439 Rep 571 Posts Drives: F80 M3 Join Date: Jul 2022 Location: Alberta iTrader: (0)	I went with Chris at motiv. Hope to be up and running in a week or two on MHD. Conversations with Bend were this fall and they would only tune with o2s pre turbo in the manifold.
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05-18-2024, 09:48 AM	#53
b_w. Lieutenant 439 Rep 571 Posts Drives: F80 M3 Join Date: Jul 2022 Location: Alberta iTrader: (0)	Been a month or so messing around with the single turbo 4n kit. Chris at motiv has been super helpful getting it running on MHD. Had it out to the track a few times. Buttery smoothe and fast as hell. Not a big power / torque build but feels way better on track with the power band moved up compared to stock. Think gts +. Always quick on power and sounds amazing. Can't recall who was working on the new Vargas single turbo kit...can't find the post but curious how it's working out? Last edited by b_w.; 05-18-2024 at 10:38 AM..
	Appreciate 0 Quote