I had it running only marginally better, so I decided to do some more basic troubleshooting. Since my fuel injectors were a bit of an unknown, I decided to flow test them. My methodolgy was pretty simple, pulled the entire injector assembly out of the intake manifold, rigged up a connector from a sacrificial harness I had laying around and ran the injectors at 12V on the fuel pump (figured it would give a good indicator of any other issues with fuel supply too) and caught 60 seconds worth of fuel spray from each injector...
Results
1 - 80cc 2 - 130cc
3 - 90cc 4 - 150cc
5 - 150cc 6 - 148cc
This is probably a big piece of my puzzle don't you think?
Looking at some conversion tables, the 17# injectors should produce 178cc of fuel at full cycle for 60 seconds - I'm nowhere close. With my modded intake, headers, cleaned up and polished intake and exhaust ports and free flow exhaust system, I'm wondering if the 17# injectors are really up to the task even if they are flowing the 178cc of fuel at high rpm. I have found a set of brand new delphi 21# injectors that I can pick up reasonably cheaply and am thinking I could just update my fuel injector size scalar for the bigger fuel injectors. What do you all think? Overkill? room to grow? buffer for diminished flow over time?
Results
1 - 80cc 2 - 130cc
3 - 90cc 4 - 150cc
5 - 150cc 6 - 148cc
This is probably a big piece of my puzzle don't you think?
Looking at some conversion tables, the 17# injectors should produce 178cc of fuel at full cycle for 60 seconds - I'm nowhere close. With my modded intake, headers, cleaned up and polished intake and exhaust ports and free flow exhaust system, I'm wondering if the 17# injectors are really up to the task even if they are flowing the 178cc of fuel at high rpm. I have found a set of brand new delphi 21# injectors that I can pick up reasonably cheaply and am thinking I could just update my fuel injector size scalar for the bigger fuel injectors. What do you all think? Overkill? room to grow? buffer for diminished flow over time?
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