Carpokes Porsche Forum

Tom wrote: Wed Jul 01, 2026 8:03 am

NCGermerican wrote: Wed Jul 01, 2026 7:52 am

Tom wrote: Wed Jul 01, 2026 7:47 am What injectors from Five-O do you have? And what Fuel Pressure Regulator? Are your chips mapped for your injectors and fuel pressure?

D1150BA 50lb/525cc - Peak&Hold - 2.5 OHMS. The FPR is a 3.0 Delphi (Bosch no longer makes 3.0 FPR's). The chip is from John Behe. He actually created (3) chips for me to try, each one progressively adding more fuel and he recommended the injectors I bought. John is endorsed by Charlie at Evergreen Turbo and is also known by Joe at F9. Apparently John has been tuning these for years.

Did he know you were running those injectors when he supplied the chips? If you feel like humoring me, I'd suggested installing the stock injectors, chips, and FPR while you diagnose. The fewer variables the better -- otherwise it can become like playing billiards on a row boat... I'm wondering if you are so rich you are missing, which passes unburied gas to the exhaust along with unused oxygen the o2 sensors interpret as lean. Those plugs are not happy campers...

NCGermerican wrote: Wed Jul 01, 2026 8:07 am

Tom wrote: Wed Jul 01, 2026 8:03 am

NCGermerican wrote: Wed Jul 01, 2026 7:52 am

D1150BA 50lb/525cc - Peak&Hold - 2.5 OHMS. The FPR is a 3.0 Delphi (Bosch no longer makes 3.0 FPR's). The chip is from John Behe. He actually created (3) chips for me to try, each one progressively adding more fuel and he recommended the injectors I bought. John is endorsed by Charlie at Evergreen Turbo and is also known by Joe at F9. Apparently John has been tuning these for years.

Did he know you were running those injectors when he supplied the chips? If you feel like humoring me, I'd suggested installing the stock injectors, chips, and FPR while you diagnose. The fewer variables the better -- otherwise it can become like playing billiards on a row boat... I'm wondering if you are so rich you are missing, which passes unburied gas to the exhaust along with unused oxygen the o2 sensors interpret as lean. Those plugs are not happy campers...

That's exactly what I'm thinking. Now I just have to dig around and see if I have the original FPR and chip somewhere....

Tom wrote: Wed Jul 01, 2026 8:08 am

NCGermerican wrote: Wed Jul 01, 2026 8:07 am

Tom wrote: Wed Jul 01, 2026 8:03 am

Did he know you were running those injectors when he supplied the chips? If you feel like humoring me, I'd suggested installing the stock injectors, chips, and FPR while you diagnose. The fewer variables the better -- otherwise it can become like playing billiards on a row boat... I'm wondering if you are so rich you are missing, which passes unburied gas to the exhaust along with unused oxygen the o2 sensors interpret as lean. Those plugs are not happy campers...

That's exactly what I'm thinking. Now I just have to dig around and see if I have the original FPR and chip somewhere....

And stock injectors!