Aftermarket injector selection

CW3SF · 12-08-2021, 08:56 AM

I’m pricing +30% injectors and I’m seeing FIC and XDI brands. There’s about a $400 difference in the two and both are a bit in the pricey side lol. Is either brand better than the other? Anyone know the differences in the two brands?

*radz28* · 12-08-2021, 01:48 PM

If you haven't, perhaps you might find more input over on HPTuners. There might be some useful stuff there, too.

CW3SF · 12-08-2021, 01:49 PM

Quote:

Originally Posted by radz28

If you haven't, perhaps you might find more input over on HPTuners. There might be some useful stuff there, too.

Funny you should mention that, I was just over there reading.

Z OH 6 · 12-08-2021, 01:55 PM

Never used XDI but Fuel Injector Connection (not to be confused with Fuel Injector Clinic) is spotty.

*radz28* · 12-08-2021, 02:46 PM

Out of my own curiosity - why are you going with this route? I haven't done the maths, but, is PI about the same or less? I know tuning is more complicated with adding PI, but I'm just curious.

CW3SF · 12-08-2021, 03:04 PM

Quote:

Originally Posted by radz28

Out of my own curiosity - why are you going with this route? I haven't done the maths, but, is PI about the same or less? I know tuning is more complicated with adding PI, but I'm just curious.

I’m upgrading ported oem TB to 103, standard Rotofab to Big Gulp and Stage X porting the stock blower. That’s gonna pretty much kill my ethanol content due to injector PW. I’m looking at doing the +30 injectors while the blower is off to gain PW headroom and add ethanol back in to the mix. My research says that the stock fuel pump with JMS booster will support the +30s and I’ll be under 725whp, so my high side should also be good. Staying with stock pulleys.

ZLE dude · 12-09-2021, 06:34 AM

Quote:

Originally Posted by CW3SF

I’m upgrading ported oem TB to 103, standard Rotofab to Big Gulp and Stage X porting the stock blower. That’s gonna pretty much kill my ethanol content due to injector PW. I’m looking at doing the +30 injectors while the blower is off to gain PW headroom and add ethanol back in to the mix. My research says that the stock fuel pump with JMS booster will support the +30s and I’ll be under 725whp, so my high side should also be good. Staying with stock pulleys.

I'm curious to see how this turns out. I do love running E!

*radz28* · 12-09-2021, 07:36 AM

Quote:

Originally Posted by CW3SF

I’m upgrading ported oem TB to 103, standard Rotofab to Big Gulp and Stage X porting the stock blower. That’s gonna pretty much kill my ethanol content due to injector PW. I’m looking at doing the +30 injectors while the blower is off to gain PW headroom and add ethanol back in to the mix. My research says that the stock fuel pump with JMS booster will support the +30s and I’ll be under 725whp, so my high side should also be good. Staying with stock pulleys.

Thanks for the response. I learn something every day

JANNETTYRACING · 12-09-2021, 08:36 AM

Quote:

Originally Posted by CW3SF

I’m upgrading ported oem TB to 103, standard Rotofab to Big Gulp and Stage X porting the stock blower. That’s gonna pretty much kill my ethanol content due to injector PW. I’m looking at doing the +30 injectors while the blower is off to gain PW headroom and add ethanol back in to the mix. My research says that the stock fuel pump with JMS booster will support the +30s and I’ll be under 725whp, so my high side should also be good. Staying with stock pulleys.

I have FIC 30% over in stock if that helps you.

You will run out of high side pump next.

Ted.

CW3SF · 12-09-2021, 08:40 AM

Quote:

Originally Posted by JANNETTYRACING

I have FIC 30% over in stock if that helps you.

You will run out of high side pump next.

Ted.

Thanks Ted. I’ll be in touch. Appreciate it.

KingLT1 · 12-09-2021, 09:15 AM

The FIC's seem to be hit or miss...you either get a good set or get a set that has issues. A friend of mine put a set in his Turbo SS and they were causing weird issues with part throttle fueling. FIC sent him another set and they were fine. GPI told him that they have had seen this happen a few times. I haven't heard or read any negative reports on the XDI yet.

CW3SF · 12-09-2021, 09:24 AM

Quote:

Originally Posted by KingLT1

The FIC's seem to be hit or miss...you either get a good set or get a set that has issues. A friend of mine put a set in his Turbo SS and they were causing weird issues with part throttle fueling. FIC sent him another set and they were fine. GPI told him that they have had seen this happen a few times. I haven't heard or read any negative reports on the XDI yet.

Thanks for the input. The XDIs seem to be running about $400 less than FIC also.

KingLT1 · 12-09-2021, 09:27 AM

Quote:

Originally Posted by CW3SF

Thanks for the input. The XDIs seem to be running about $400 less than FIC also.

Not if you know where to look....FIC are the cheapest.

Camaro1973 · 12-09-2021, 11:18 AM

Quote:

Originally Posted by CW3SF

I’m upgrading ported oem TB to 103, standard Rotofab to Big Gulp and Stage X porting the stock blower. That’s gonna pretty much kill my ethanol content due to injector PW. I’m looking at doing the +30 injectors while the blower is off to gain PW headroom and add ethanol back in to the mix. My research says that the stock fuel pump with JMS booster will support the +30s and I’ll be under 725whp, so my high side should also be good. Staying with stock pulleys.

Your currently holding 75-80psi low side and 2900 high side now?

12-08-2021, 08:56 AM	#1
CW3SF Drives: 2019 Chevy Camaro ZL1 M6 Join Date: Jul 2019 Location: Sea level Posts: 1,252 View My Garage	Aftermarket injector selection I’m pricing +30% injectors and I’m seeing FIC and XDI brands. There’s about a $400 difference in the two and both are a bit in the pricey side lol. Is either brand better than the other? Anyone know the differences in the two brands? __________________ Kong Stage X Port, NW103, LPE HPFP, XDI +30 Injectors, ARH Headers, Flex Fuel, JMS Booster, AWE Touring, Elite E2-X CC. Stock heads, stock cam, stock pulleys: Tuned by KingLT1. 740whp Uncorrected on e50 Last edited by CW3SF; 12-08-2021 at 09:09 AM. Reason: Clarity

12-08-2021, 01:48 PM	#2
radz28 Petro-sexual Drives: Ultra-Grin Join Date: Oct 2006 Location: Crazy Coast Posts: 15,201 View My Garage	If you haven't, perhaps you might find more input over on HPTuners. There might be some useful stuff there, too. __________________ '20 ZL1 Black "Fury" A10, PDR, Exposed CF Extractor Magnuson Magnum DI TVS2650R // RFBG // Soler 103 // TooHighPSI Port Injection // THPSI Billet Lid // FF // Katech Drop-In // PLM Heat Exchanger // ZLE Cradle bushings // BMR Chassis-Suspension Stuff // aFe Bars // Diode Dynamics LEDs // ACS Composites Guards // CF Dash // Aeroforce // tint // other stuffs

12-08-2021, 01:55 PM	#4
Z OH 6 Drives: 2021 Red Hot ZL1 Join Date: Sep 2020 Location: Gapplebees Posts: 3,092	Never used XDI but Fuel Injector Connection (not to be confused with Fuel Injector Clinic) is spotty. Last edited by Z OH 6; 01-07-2022 at 09:25 AM.

12-08-2021, 02:46 PM	#5
radz28 Petro-sexual Drives: Ultra-Grin Join Date: Oct 2006 Location: Crazy Coast Posts: 15,201 View My Garage	Out of my own curiosity - why are you going with this route? I haven't done the maths, but, is PI about the same or less? I know tuning is more complicated with adding PI, but I'm just curious. __________________ '20 ZL1 Black "Fury" A10, PDR, Exposed CF Extractor Magnuson Magnum DI TVS2650R // RFBG // Soler 103 // TooHighPSI Port Injection // THPSI Billet Lid // FF // Katech Drop-In // PLM Heat Exchanger // ZLE Cradle bushings // BMR Chassis-Suspension Stuff // aFe Bars // Diode Dynamics LEDs // ACS Composites Guards // CF Dash // Aeroforce // tint // other stuffs

12-09-2021, 09:15 AM	#11
KingLT1 Drives: 2016 1SS NFG A8 Join Date: Aug 2017 Location: 46804 Posts: 6,800	The FIC's seem to be hit or miss...you either get a good set or get a set that has issues. A friend of mine put a set in his Turbo SS and they were causing weird issues with part throttle fueling. FIC sent him another set and they were fine. GPI told him that they have had seen this happen a few times. I haven't heard or read any negative reports on the XDI yet. __________________ 2016 NFG 1SS A8 Options-2SS Leather/NPP Perf. mods-Whipple 2.9/Fuel System/Flex Fuel/103mm TB/Rotofab Big Gulp/Cat Deletes/Corsa NPP Per. times- 10.5 @ 137 w/ 1.8 60ft Full weight on 20's 1200DA

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