Possible issues with Rotofab and/or TM ported throttke body

Torquem · 06-19-2018, 11:37 AM

I installed the rotofab dry CAI at the same time that I installed a TM throttle body. Ever since then it feels like the car is breaking up a bit at WOT. Hard to explain the feeling. Doesn't feel like it is pulling very hard. Almost feels like not enough fuel or spark. Easiest way to explain how it feels is like driving into a really strong headwind. Any thoughts?

Sooner Cole · 06-19-2018, 11:45 AM

Quote:

Originally Posted by Torquem

I installed the rotofab dry CAI at the same time that I installed a TM throttle body. Ever since then it feels like the car is breaking up a bit at WOT. Hard to explain the feeling. Doesn't feel like it is pulling very hard. Almost feels like not enough fuel or spark. Easiest way to explain how it feels is like driving into a really strong headwind. Any thoughts?

Have a tuner do a data log during a WOT and see results. This car runs extremely rich from the factory, so I doubt you are running out of fuel, but really only one way to know for sure.

Lethal Z · 06-19-2018, 11:46 AM

If you are not getting a check engine light, chances are you installed everything correctly. Recheck all connections, if everything is tight, I would reinstall the factory throttle body and see if the issue persists.

Zl1steve · 06-19-2018, 12:22 PM

How many miles? I had the same problem and mine was the plug wires. The stock wires are ok but have a ton resistance. Firecore wires are the best there is period. You may need to drive car more so it can learn the correct air fuel strategy. Mine missing around 5500 and up and switching out wires cured mine. I have headers tune pulley and ported tb and rotofab. Car has ran 10.82@ 133.8 on stock tires.

hashtag · 06-19-2018, 12:40 PM

Quote:

Originally Posted by Zl1steve

How many miles? I had the same problem and mine was the plug wires. The stock wires are ok but have a ton resistance. Firecore wires are the best there is period. You may need to drive car more so it can learn the correct air fuel strategy. Mine missing around 5500 and up and switching out wires cured mine. I have headers tune pulley and ported tb and rotofab. Car has ran 10.82@ 133.8 on stock tires.

Part number for the Firecore Wires if possible. I searched & was not able to find it. Would like to get a set.

2018ZL1 · 06-19-2018, 02:07 PM

Quote:

Originally Posted by Zl1steve

How many miles? I had the same problem and mine was the plug wires. The stock wires are ok but have a ton resistance. Firecore wires are the best there is period. You may need to drive car more so it can learn the correct air fuel strategy. Mine missing around 5500 and up and switching out wires cured mine. I have headers tune pulley and ported tb and rotofab. Car has ran 10.82@ 133.8 on stock tires.

If you dont mind me asking what your 60ft time was on that? That MPH should be deep into the 10's... just curious.

Zl1steve · 06-19-2018, 04:14 PM

Quote:

Originally Posted by 2018ZL1

If you dont mind me asking what your 60ft time was on that? That MPH should be deep into the 10's... just curious.

1.86. Best 1/8 mile mph 105.84. With drag radials it should go 10.50 or so. And it was a 10.88 not 10.82.

ReefBlueCoupe · 06-19-2018, 04:20 PM

Go back to stock. See if the problem still exists. If not, add each separately and see if you notice what you are describing. If you do notice what you are describing with either installed seperately, contact the corresponding vendor with your thoughts on the matter.

Zl1steve · 06-19-2018, 04:21 PM

Here are 2 passes.

Zl1steve · 06-19-2018, 04:22 PM

Quote:

Originally Posted by hashtag

Part number for the Firecore Wires if possible. I searched & was not able to find it. Would like to get a set.

Call up Carlisle racing they have them.

2018ZL1 · 06-19-2018, 05:08 PM

Quote:

Originally Posted by Zl1steve

1.86. Best 1/8 mile mph 105.84. With drag radials it should go 10.50 or so. And it was a 10.88 not 10.82.

Thanks! didnt mean to Hijack this post!

conradsteph · 06-19-2018, 06:03 PM

Quote:

Originally Posted by Torquem

I installed the rotofab dry CAI at the same time that I installed a TM throttle body. Ever since then it feels like the car is breaking up a bit at WOT. Hard to explain the feeling. Doesn't feel like it is pulling very hard. Almost feels like not enough fuel or spark. Easiest way to explain how it feels is like driving into a really strong headwind. Any thoughts?

Try disconnecting the negative terminal in the trunk for a couple of minutes then reconnect. A few months after my install during a WOT pull, I had a Check Engine Light pop up with significantly reduced power. Discussed it with my installer and he mentioned that occasionally the ported throttle body can cause the issue. Battery disconnect reset everything and all my horses and torque are back.

hashtag · 06-19-2018, 06:05 PM

Quote:

Originally Posted by Zl1steve

Call up Carlisle racing they have them.

Word. Appreciate it

biscuit60140 · 06-19-2018, 07:13 PM

I'm actually in a similar boat with the OP. My car feels like it almost lunges or stutters under like 3/4 throttle but driving normal and even full throttle seem okay. I've double checked everything and it looks good. All I can think is maybe it needs more time to learn how to deal with the new parts.

06-19-2018, 11:37 AM	#1
Torquem Bannable Drives: 2017 Camaro ZL1 Join Date: Oct 2009 Location: Houston, TX Posts: 460 View My Garage	Possible issues with Rotofab and/or TM ported throttke body I installed the rotofab dry CAI at the same time that I installed a TM throttle body. Ever since then it feels like the car is breaking up a bit at WOT. Hard to explain the feeling. Doesn't feel like it is pulling very hard. Almost feels like not enough fuel or spark. Easiest way to explain how it feels is like driving into a really strong headwind. Any thoughts? __________________ One must forego the self to attain total spiritual creaminess, and avoid the chewy chunks of degradation 2017 ZL1 A10 - Hyper Blue Metallic Rotofab CAI, TM ported TB, AWE non res touring catback with PLP's

06-19-2018, 04:20 PM	#8
ReefBlueCoupe Drives: A few of each Join Date: Dec 2017 Location: TN Posts: 138	Go back to stock. See if the problem still exists. If not, add each separately and see if you notice what you are describing. If you do notice what you are describing with either installed seperately, contact the corresponding vendor with your thoughts on the matter. __________________ '18 MBM ZL1 1LE

06-19-2018, 04:21 PM	#9
Zl1steve Drives: Zl1 Join Date: Feb 2017 Location: Washington Posts: 195	Here are 2 passes. Attached Images

06-19-2018, 11:46 AM	#3
Lethal Z American Gearhead!! Drives: ZL1 1LE/GT350/Ford RS/Gen 2 Raptor Join Date: Mar 2013 Location: Merica Posts: 433	If you are not getting a check engine light, chances are you installed everything correctly. Recheck all connections, if everything is tight, I would reinstall the factory throttle body and see if the issue persists.

06-19-2018, 12:22 PM	#4
Zl1steve Drives: Zl1 Join Date: Feb 2017 Location: Washington Posts: 195	How many miles? I had the same problem and mine was the plug wires. The stock wires are ok but have a ton resistance. Firecore wires are the best there is period. You may need to drive car more so it can learn the correct air fuel strategy. Mine missing around 5500 and up and switching out wires cured mine. I have headers tune pulley and ported tb and rotofab. Car has ran 10.82@ 133.8 on stock tires.

06-19-2018, 07:13 PM	#14
biscuit60140 Drives: 2017 Camaro ZL1 Join Date: May 2017 Location: Huntley, IL Posts: 7	I'm actually in a similar boat with the OP. My car feels like it almost lunges or stutters under like 3/4 throttle but driving normal and even full throttle seem okay. I've double checked everything and it looks good. All I can think is maybe it needs more time to learn how to deal with the new parts.

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