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turbocharged 1990 miata with 1.8 swap throttle body question

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Old Oct 5, 2015 | 04:12 AM
  #1  
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Default turbocharged 1990 miata with 1.8 swap throttle body question

I just have a few questions.
so my car is a 1990. I have a 1994 1.8 which I have already installed in the car. im running a BEGI manifold and a T2871 turbo charger. I am running 440 cc injectors. I have a flying Miata clutch. I have done new timing belt, water pump, front/rear main seals, basically all of the seals. Yes I have A/C, Yes I have POWER STEERING and Yes I have HEAT.

I know pretty much everyone uses the 1.6 throttle body on the 1.8
I know the connectors are different for the throttle bodies

I ALREADY HAVE MEGASQUIRT MSPNP 2
I am not running a MAF!!

Now back to the throttle bodies
1) is it possible to wire in the 1.8 throttle body and adapt it to the 1.6 harness since I am running Megasquirt?

2) is it possible to use the 1.8 throttle body instead of the 1.6 throttle body.

3) I WANT TO USE THE 1.8 THROTTLE BODY IF POSSIBLE!

if you have done this please give me more information

Please do not tell me to just use the 1.6 throttle body. I want details, I want to know why it will work or why it wont work!

this is pretty much the only thing standing in my way at this point
Old Oct 5, 2015 | 05:43 AM
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I did find this
https://www.miataturbo.net/engine-pe...g-mspnp-85659/
Old Oct 5, 2015 | 05:56 AM
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answer found!
https://www.miataturbo.net/megasquir...asquirt-62065/
https://www.miataturbo.net/megasquir...-93-car-36271/
Old Oct 5, 2015 | 09:04 AM
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Originally Posted by cschmelzer
Please do not tell me to just use the 1.6 throttle body. I want details, I want to know why it will work or why it wont work!

dont use the 1.6L throttle body.

simply wire the 1.8L tps to the oe harness correctly.
Old Jul 9, 2025 | 12:48 PM
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Do you have a link to the "adapter/isolator" you mentioned in your response?

Thanks,
L.g.
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