North American Turbocoupe Organization



My aftermarket fueling plans w/ questions
John B Offline
Member
#1
I've been running the stock injectors and fuel pump on my PimpX 88 TC for about a year now and it's time to turn it up. I have gnari's turbo kit on there and I'm maxing the stock injectors at only 13 psi of boost. I'm going to upgrade the entire fuel system (because I can't keep it simple with anything on this car) and this is what I have planned:
- 15 gallon fuel cell w/ sending unit (mounted in trunk)
-   -8an fuel line for the feed throughout car
- Walbro 255lph external pump
- 100 micron fuel filter (pre pump)
- 10 micron fuel filter (post pump)
- Aeromotive Fuel Pressure Regulator
- Stinger Fuel Rail
-   -6an fuel line for the return
- 60 or 80lb injectors (probably 80's for my power goals)

I know the purist are freaking out looking at this list but there is nothing stock on my car (vacuum assist brakes, sn95 mustang coilover suspension, manual steering, gnari turbo kit, etc. etc.) and this is what I want to do. I have some questions though and any help would be appreciated:
1. In regards to fuel line: could something like Aeroquip's socketless line be used? I'm going to give them a call but I'm curious if anyone here has had any personal experience with it. I like it more than the normal braided line for the ability to tell when the line is starting to deteriorate.
2. Wiring in the new pump: is there any special wiring in this new pump or can I just splice it into the factory pump wiring?
3. Fuel filters: I see mixed opinions on fuel filters, their size, and how many to have. I'm thinking of a 100 micro before the pump, after the tank and a 10 micro after the pump, before the FPR. Any thoughts?
Any other suggestions, warnings, things to look out for, etc. would be greatly appreciated.
88 Turbo Coupe: Front mount intercooler, remote mount TFI, MGW short throw shifter... murdered out
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Mikey97D Offline
Junior Member
#2
What fuel pump is currently in the car?
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Spoolyalater351 Offline
Junior Member
#3
You looked into the stealth Aeromotive pumps?
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John B Offline
Member
#4
(02-25-2019, 04:49 PM)Mikey97D Wrote: What fuel pump is currently in the car?

That's a good question; I believe it is the stock pump but I don't know. The previous owners had some modifications done before I bought the car three years ago. I know the injectors are stock based on the pimpx I'm running and tuning with but not sure about the pump until I drop the tank

(02-26-2019, 12:40 AM)Spoolyalater351 Wrote: You looked into the stealth Aeromotive pumps?

I have not; I pulled the trigger and went with the walbro external pump. Reviews looked really good for it
88 Turbo Coupe: Front mount intercooler, remote mount TFI, MGW short throw shifter... murdered out
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Mikey97D Offline
Junior Member
#5
Definitely worth going with a bigger pump. Did you adjust your fuel pressure already to help with the lean at WOT? Just wondering if that will give you some additional thoughts on what the next injector size you will want.

I had my injectors cleaned and rebuilt by a local place to me since I was having fuel line and gas tank issues. It was about $100 for all 4 injectors and they gave a bunch of information on what they saw. They did warn me against buying Chinese injectors. Thought I should mention it in case you come across a used set of injectors.
Here's where I went: https://www.injector.com/cart/pc/home.asp
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John B Offline
Member
#6
(02-27-2019, 03:31 PM)Mikey97D Wrote: Definitely worth going with a bigger pump.  Did you adjust your fuel pressure already to help with the lean at WOT?  Just wondering if that will give you some additional thoughts on what the next injector size you will want.

I had my injectors cleaned and rebuilt by a local place to me since I was having fuel line and gas tank issues.  It was about $100 for all 4 injectors and they gave a bunch of information on what they saw.  They did warn me against buying Chinese injectors.  Thought I should mention it in case you come across a used set of injectors.  
Here's where I went:  https://www.injector.com/cart/pc/home.asp

Thank you for the link. There was a kirban adjustable FPR on the car when I bought it and base fuel was increased to 43 psi. I have a stand-alone pimpX ecu so I was able to tune/adjust the fuel map to get desirable AFR’s for all types of driving. That pimpX is the best money spent on this car thus far.  I’m thinking that I’ll need at least 80 lb/hr injectors for my power goals
88 Turbo Coupe: Front mount intercooler, remote mount TFI, MGW short throw shifter... murdered out
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