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2G tuning a 2G 4G64t

alexr254

Probationary Member
19
3
Jun 18, 2021
Palm Coast, Florida
I have a 99 Spyder GS. Which i am just starting to research and work on. It has the SOHC 4G64.
I am replacing the head to a DOHC 4G63. And will be adding a turbo on it. Deleting the balance shaft. And other various performance (HP) improvements.
I do have a eprom ECU from another 2G.

I was looking into ecmtuning but am not sure what I need to get from there for my build.
Can anyone help me on what I should start with?
Sorry i am new to this and am just starting to take on this project with my father. Still in the initial learning phase. And just trying to gather everything we need to get started.

What injectors are recommended?
 
Last edited:

chrisman287

Proven Member
37
8
Jul 19, 2021
New_York
I currently have a MAFT w/ 3” GM MAF. I’ve worked out a bit of the kinks and it seems to run a lot better than it did but it’s a bit of a pain and doesn’t seem all that accurate (can only make changes in 5% increments).

I have a friend that highly suggests ECMLink with a speed density set up. I’ll probably go that route after I get tired of turning dials.
 

alexr254

Probationary Member
19
3
Jun 18, 2021
Palm Coast, Florida
Based on research it looks like i should go with Denso 660 injectors.
Now i just need to find where to get them...
Or maybe ill go with FIC 650cc since they seem easier to find brand new.
 
Last edited:
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