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c6 z06 ITB setup questions

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Old Mar 8, 2017 | 04:14 PM
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Default c6 z06 ITB setup questions

Well, I once said that I wouldn't modify my Z06. Lately I've been thinking "why not?". I ran across a few ITB (individual throttle body) setups and wondered how it could be made to work. I prefer the feel of a direct (cable/linkage) connection from pedal to throttle body(as opposed to dbw)but, obviously, c5 and up vettes have systems interwoven with dbw. So, how would one make this work?
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Old Mar 8, 2017 | 04:18 PM
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Something like this

​​​​​​​
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Old Mar 8, 2017 | 04:19 PM
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Old Mar 8, 2017 | 04:31 PM
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Aftermarket ECU

Any decent ITB setup is going to be $5k+ to do correctly.
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Old Mar 8, 2017 | 07:22 PM
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Will an aftermarket ecu keep all the factory features though? I don't think the aftermarket is that good yet. I guess no one has tried to tackle this problem yet. By tackle I mean actually find a good solution... not just throwing an aftermarket ecu at it.

​​​​​​​ I've used the downdraft version of this and it was $1500 ish. That engine was cable tb though and no traction control, cruise control, etc., so it was easy. $5k? Someone is gouging at that price. For mechanical injection maybe.
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Old Mar 8, 2017 | 09:04 PM
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Have you ever driven an ITB car?

street use generally requires quite a bit of tuning.
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Old Mar 9, 2017 | 08:20 AM
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Depends on what aftermarket ECU, but no you can't have a cable TB and all factory features.

It isn't a cheap/easy setup to do on a modern car unless you are going full out race car. $5k was on the low end of people who have got this to work.
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Old Mar 9, 2017 | 12:56 PM
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I used the speedmaster downdraft setup on an lq4 based engine in a c3 corvette. It drove fine after the usual tuning. It was like driving with a really big carb. That setup already had a cable = easy.

This was really more of a "how could I make it work on a c6?" Kind of thread. I probably won't consider actually putting it on my car, but I would like to know how it could be done and keep all functions.

Which aftermarket ecu let's you keep traction control, stability control, cruise control, etc.? I haven't seen one yet.

​​​​​​​Are there any electronic actuators that could be used to control the throttle actuation? I guess I could take a junk fbw throttle body apart to see if It could be used to work the linkage. The throttle body motor doesn't know or care what is being moved, right?
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Old Mar 10, 2017 | 08:29 AM
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Originally Posted by coothethird
I used the speedmaster downdraft setup on an lq4 based engine in a c3 corvette. It drove fine after the usual tuning. It was like driving with a really big carb. That setup already had a cable = easy.

This was really more of a "how could I make it work on a c6?" Kind of thread. I probably won't consider actually putting it on my car, but I would like to know how it could be done and keep all functions.

Which aftermarket ecu let's you keep traction control, stability control, cruise control, etc.? I haven't seen one yet.

​​​​​​​Are there any electronic actuators that could be used to control the throttle actuation? I guess I could take a junk fbw throttle body apart to see if It could be used to work the linkage. The throttle body motor doesn't know or care what is being moved, right?
Harrop make an ITB that is FBW. Used this on robz's C5Z 388 CI setup. Car idled at 650 rpm and drove fantastic.
As for keeping all of your functions, Haltech makes a piggyback system for the C6. We elected to run their system and it works great. Their computer is used for engine management. Features include individual cylinder tuning, a two-step function, and capability of exceeding the 8200 rpm limit of the OEM ECM just to name a few.
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