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Post History: 69_R-Code
Going to be a difficult issue to diagnose. Back firing through the carb is more of a timing issue.
…In: Running great for a while then suddenly throttle response issues!
11 months ago
Good chance you lost your ECU. I lost mine last summer - one day - car would not start. Call FITec …In: Handheld won't connect to ecu
1 year ago
It has to be the gas cap. Drive the car a bit w/the cap removed to confirm then replace or repair t …In: Should the gas tank become pressurized?
1 year ago
O2 will be pretty inaccurate as individual cylinders sometimes vary greatly on AFR.In: Why no zoomies?
1 year ago
Primary reason is that with zoomies - you have no choice but to install the O2 sensor on one of the …In: Why no zoomies?
1 year ago
I guess try the pump w/o a return line but be prepared install one if it doesn't work as expect …In: Return line.
1 year ago
Had similar issue. I was told my Fitech 2 weeks ago to save every parameter one-at-a-time.In: Certain Options Wont Save
2 years ago
I used to run fuel filters with the "stainless screens". When the engine got warm - the s …In: Fitech wont rev under load
2 years ago
The original fuel command center is known to be problematic. That's why FITech redesigned the …In: 400HP EFI - Vehicle won't start, fuel injectors not spraying
2 years ago
At idle - your FITech timing control won't be activated. You should be able to advance timing …In: Adjust base timing while using timing control
3 years ago
I would say this is a question for FiTech. Injectors likely differ depending on the HP capability o …In: Injector plugs?
3 years ago
I'm not a fan of these. Seem to add a level of complexity to the install. If you don't h …In: Tapping on the surge tank may fix major problem.
3 years ago
I'm not a blower guy but 750RPM seems low. An engine has to be pretty mild to idle that low. …In: Dies after revving
3 years ago
Start with the basics. Check plugs. You need to see if they are fuel fouled or oil fouled. Replac …In: Plugs black. Exhaust tips black. Poor mileage. Some dark smoke
3 years ago
Very cool cars. Enjoy them in good health.In: 1958 Lister race car and 1934 Mercedes-Benz tribute each with small-block Chevies
3 years ago
I would say that if it was running fine on cam setting "2" - revert back to that setting & …In: Throttle cut and loss of power
3 years ago
4 years ago
Beautiful coupe. Guess I need more info in order to help.
Fuel pump type? Mechanical with Fitec …In: Where to start?
4 years ago
1st - great looking truck. Your issue is certainly unique. My 1st guess would be a small air leak …In: Lean to rich under decel
4 years ago
Try adjusting one of these:
Fast Decay 20F= A larger decay will shorten the amount of time that …In: Stalling problem after cold start
4 years ago
I don't know what the flow rate would be but you should have about 58 PSI fuel pressure (most s …In: flow rate from return line. ?
4 years ago
Sure sounds like a vacuum leak to me if you are idling at 2,000 RPM plus. Make sure you have plugs …In: surging idle
5 years ago
- Don't have a suggestion. I do know the FiTechs' squirt a shot of fuel - at key-on. Per …In: No start and car dies
5 years ago
I would say a very bad idea. You should use the O2 sensor for the FITech. Will also need a length …In: O2 sensor at WOT Dyno
5 years ago
I know you have checked for exhaust leaks but this sure sounds like a leak. I've got exhaust c …In: AFR zooms to 20.6!
5 years ago
I'm using an old Uni-Lite with the Pertronix Igniter II module. Works great. If you plan on u …In: Type of Distributer to use
5 years ago
Since you paid for a turn-key install, in December, I think you should approach your shop to see if …In: New Guy with Problem
5 years ago
Can't really attribute a cranking issue to Fitech. Take the battery to an auto parts store. M …In: Voltage issue
5 years ago
What is your A/F ratio when running cold? Almost sounds like the unit is dumping too much fuel & …In: loud exhaust pops when cold undrivable until norm temp reached
5 years ago
Sounds like you've got some interference of some sort. Perhaps plug wires. Try re-routing or …In: New instal
5 years ago
I agree with poster above. Check your fuel filter(s). Years ago I also had an in-tank pickup tube …In: No Start Issue
6 years ago
Don't know anything about an LS. What cam selection? Go down one & see if this helps. I& …In: OG gearhead newbie to ls/turbo/efi first drive log (running terrible)
6 years ago
I would say that if the O2 sensor is performing OK in-the-collector - leave it there. No need to cr …In: High flo cats
6 years ago
Assuming you are phasing your rotor to utilize timing control. This requires an MSD distr. I' …In: Base Timing & Rotor Phasing
6 years ago
Interesting dilemma. I am running a locked-out MSD distr. Once I installed the FITech I removed my …In: Anyone using an MSD ready to run with Fitech ?
6 years ago
Perhaps you need to open the throttle blades at idle. I had to do this on my big block as it would …In: Dies at idle below operating temperature
6 years ago
Try their tech site. They also have several videos posted. https://fitechefi.com/tech-center/In: Just bought a Jeep with FItech
6 years ago
Really depends on your fuel pump. If you have a super large GPH inline pump then the lines would be …In: fuel return line size
6 years ago
6 years ago
Since the issue remains with a new starter - I'd check timing. Disable timing control & s …In: Starting issue
6 years ago
Do you have fuel commander, inline pump, or in-tank pump? I have an inline pump by-the-tank and had …In: prime 5 to six times before start
6 years ago
Not good - looks like you need to call Fitech support. Perhaps they will let you send it in to benc …In: Will not start. fuel pump running. connect to ecu
6 years ago
Base idle too low perhaps? Increase your idle & see if this still happens.In: Stalls going from park to drive
6 years ago
Bad ignition switch? Some how Fitech is still receiving "key on". Install a male/female …In: Electrical Question
6 years ago
Ditto - I installed a check valve back by my tank. Helps reduce crank time on start.In: Fuel pressure slow bleed down
6 years ago
Yes - that's odd. Not knowing how long you've had the unit - perhaps you need to reset th …In: Idle Hang
6 years ago