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1G 450CC injectors with auto FPR?

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blujeans

Proven Member
78
13
Dec 15, 2018
Calgary, AB_Canada
I recently bought 450CC injectors for my automatic 1G, and I'm wondering if it would be wise/nessecary to also install the fuel pressure regulator off a manual turbo 1G. I believe the PSI on the auto is about 43 while the manual's is about 39.

And before it's pointed out, the previous owner did install a manual ECU since the original one shat itself apparently.
 
If your wanting more flow from the injectors, go with the AT FPR

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the numbers in the green box are the size when corrected for fuel pressure
 
Last edited:
The manual ECU will help the car build boost. My auto car had a std ECU in it and it was fun. I put a 16g on it and it really liked it.
 
I ran 450s for a while on an auto fpr and manual fpr. Both worked fine, no issues that I noticed. Boosted well on a 16g.
I did end up getting a remote tune on the 450s with an 2g maf forwards the end of my time with a 16g. But like I said I didnt see any issues running the stock manual ecu on 450s and either fpr.
 
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