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Old 05-13-2007, 11:30 PM
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Default I'm cheap

can I use a 1.8 throttle body, adn what adjustments will I have to make? It will save me like $50 on the FM swap kit.
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Old 05-14-2007, 07:36 AM
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With a MS ecu i dont see it making any difference, the AIC might be different and you can use TPS for once but other than that and maybe swaping the 1.8 ecu in for a base of operations it should work fine. most people change the TB to accomadate the 1.6 ecu i think.
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Old 05-14-2007, 07:37 AM
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****!
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Old 05-14-2007, 07:44 AM
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Why whats wrong hustler?
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Old 05-14-2007, 08:41 AM
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Originally Posted by magnamx-5
Why whats wrong hustler?
thread title.

Will I have to wire it in differently? I don't know what to expect from the pnp since I assume the wiring is "creative" to allow for pnp.

from solo miata:
I had to use the 1.6 throttle body because 1.8's air idle control valve's electrical and thermal connections on the throttle body are completely different. Both throttle bodies have the same butterfly diameter of 55mm so I wasn't concerned with choking the motor. The 1.6 throttle body's mounting holes are in different locations so I had to fabricate an adapter plate to mount it to the 1.8 manifold and connect the air idle control passages. That took a whole day in itself!
I don't know what all this means in terms of ms pnp.
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Old 05-14-2007, 08:51 AM
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It means you're going to have to do wiring changes, or MS software changes to get it to work. If you want to stay PnP just pay the $50 for the adapter and use the 1.6 tb. Think about it this way- is it worth saving $50 to bring any grief upon yourself in the midst of this project. Spending the dough on the adapter follows the rest of the decisions you've made in this project- you're trying to avoid the DIY approach and it's risks - right? I know you've got the dough- time or money?
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Old 05-14-2007, 09:03 AM
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1.6 adapter it is.
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Old 05-14-2007, 09:06 AM
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Originally Posted by m2cupcar
If you want to stay PnP just pay the $50 for the adapter and use the 1.6 tb. Think about it this way- is it worth saving $50 to bring any grief upon yourself in the midst of this project.
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Originally Posted by concealer404
Buy an MSPNP Pro, you'll feel better.
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Old 05-14-2007, 09:42 AM
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well i believe it might be just an issue of the plug ins not synching up as the auto 1.6's had variable tps's as well. But yeah to be safe and easy a adapter plate is the way to go.
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Old 05-14-2007, 10:37 AM
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I'd buck up for the FM coversion kit, less ******* about. You have to relocate the coils and throttle cable as well. If you can DIY go for it, but if you are crunched for time ...
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Old 05-14-2007, 11:48 AM
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Originally Posted by jayc72
I'd buck up for the FM coversion kit, less ******* about. You have to relocate the coils and throttle cable as well. If you can DIY go for it, but if you are crunched for time ...
I was worried about the t-body adapter availability, but they have it in stock, so I'm going to buy it now.
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Old 05-14-2007, 03:50 PM
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Originally Posted by hustler
I was worried about the t-body adapter availability, but they have it in stock, so I'm going to buy it now.
Others make them now as well.

http://www.partsgroup.com/store.aspx...=Engine&Page=7

$49
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Old 05-16-2007, 09:14 AM
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Hustler,
Buy AndyFloyd's Bell manifold, it's ready to rock with a 1.6 tb. F the adaptor plate.
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Originally Posted by concealer404
Buy an MSPNP Pro, you'll feel better.
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Old 05-16-2007, 11:06 AM
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yeah for 200 someodd bucks you get a better manifold etall,
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Old 05-16-2007, 11:11 AM
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And Kelly might see some money
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Old 05-17-2007, 12:24 AM
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I used the 1.6 tb on a 99 manifold without the plate. Needed 1/2 it took for intercooler piping. Pictures are on my car domain site. Order the coil bracket and throttle cable bracket.
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Old 05-18-2007, 05:26 PM
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Originally Posted by confuzzled
I used the 1.6 tb on a 99 manifold without the plate. Needed 1/2 it took for intercooler piping. Pictures are on my car domain site. Order the coil bracket and throttle cable bracket.
What tool did you use? Is the intake plenum a pretty soft metal?
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Old 05-19-2007, 02:41 PM
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Die grinder. It is soft AL. Just go slow and test fit along the way.
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