ITT: Weight loss, throttle body style
#25
Cpt. Slow
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Ryan, it'll require a little extra idle. Adjust it up and see if it helps. Also, drive around and let it warm up, this "mod" does make it idle rough when cold.
I'm assuming you've removed the valve on the intake manifold as well? You're on your own for hose routing if you haven't.
I'm assuming you've removed the valve on the intake manifold as well? You're on your own for hose routing if you haven't.
#26
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I had a plate water jet cut and also cut off all the unused bosses (The weight savings is negligible unless you come from the 8K road bike crowd).
Can't comment on how the car runs yet as the MS isn't hooked up the exhaust manifold is playing paper weight at the moment, however, it looks pretty at the very least.
![](https://sphotos.ak.fbcdn.net/hphotos-ak-ash2/hs311.ash2/59148_514270402452_162101051_30620053_6296406_n.jpg)
-Zach
#28
Cpt. Slow
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Bracket numero deuce.
Cut:
![Name: IMG_0433.jpg
Views: 1381
Size: 128.0 KB](https://www.miataturbo.net/attachments/race-prep-75/193803d1501229424-itt-weight-loss-throttle-body-style-img_0433.jpg)
Drilled/deburred:
![Name: IMG_0434.jpg
Views: 1365
Size: 130.8 KB](https://www.miataturbo.net/attachments/race-prep-75/193804d1501229424-itt-weight-loss-throttle-body-style-img_0434.jpg)
Making these for Wayne_Curr and he's sending me his RFLBOV.
Once I stop being lazy I'll measure it up in Catia and post a picture of it for y'all.
This was all done in roughly 45 minutes with a angle grinder, drill press w/HF mill vice, and a bench grinder w/wire wheel.
Cut:
![Name: IMG_0433.jpg
Views: 1381
Size: 128.0 KB](https://www.miataturbo.net/attachments/race-prep-75/193803d1501229424-itt-weight-loss-throttle-body-style-img_0433.jpg)
Drilled/deburred:
![Name: IMG_0434.jpg
Views: 1365
Size: 130.8 KB](https://www.miataturbo.net/attachments/race-prep-75/193804d1501229424-itt-weight-loss-throttle-body-style-img_0434.jpg)
Making these for Wayne_Curr and he's sending me his RFLBOV.
Once I stop being lazy I'll measure it up in Catia and post a picture of it for y'all.
This was all done in roughly 45 minutes with a angle grinder, drill press w/HF mill vice, and a bench grinder w/wire wheel.
#32
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Curly! i know you are only exsperienced with the 1.6 TB, im thinkin bout doing this to my TB. can i delete the IAC but keep the TPS? my car is a 95 with a 96 TB if that makes a difference!
EDIT: wait i remember doin a IAC delete on a friends S/C set up but we didnt ditch the TPS when we did the supercharger install, i guess i just answerd my own question!
EDIT: wait i remember doin a IAC delete on a friends S/C set up but we didnt ditch the TPS when we did the supercharger install, i guess i just answerd my own question!
#36
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The coolant prevents ice build up in the TB.
This said, I'm not sure if even on a sub 32 deg day the intake temps would ever get that cool due to the turbo.
-Zach
#39
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Bringing this back as I ran across it in a search and I am taking care of this, along with a bunch of other small projects right now.
I have a JRSC car with a large vacuum hose running to the large connector at the valve. I think I need to keep this hose connected to bypass the supercharger when out of boost.
Has anybody removed the valve under the dummy throttle body as shown in this thread? If so, how was the hosing routed? Picture? Thanks.
I have a JRSC car with a large vacuum hose running to the large connector at the valve. I think I need to keep this hose connected to bypass the supercharger when out of boost.
Has anybody removed the valve under the dummy throttle body as shown in this thread? If so, how was the hosing routed? Picture? Thanks.
#40
Cpt. Slow
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I don't know enough about superchargers to tell you, but that valve is the IAC. Or idle air control. I think. Anyways, it's function is essentially to act as a secondary throttle body, controlled by the ECU to maintain idle during different load conditions, such as when using power steering or air conditioning.
For routing, you'd want to remove the hose, and cap it off on the intake. I was able to use that port on the intake for my wastegate signal, so problem solved.
For routing, you'd want to remove the hose, and cap it off on the intake. I was able to use that port on the intake for my wastegate signal, so problem solved.
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