- Fitech 454 mpg. The shop owner recommended upgrading to EFI. With Edlebrock carb I was getting 17 mpg, with Fitech 12. Got the fuel system done today and will complete the wiring and Does anyone have any first hand experience showing that an aftermarket EFI system like FiTech or Holley Sniper provides any fuel economy improvements over a carburetor? I understand the benefits of EFI, and the manufacturers seem to completely avoid making any claims about improved MPG, which I'm sure they do for legal reasons. 31 rear gear. FiTech Fuel Injection is the leader in fuel injection systems for classic cars and trucks. No matter what your fuel delivery method, weight plays a large factor in the final number. I've made several AFR changes with no improvements. Yes, I am fully aware of the “if you are worried about MPGs, you shouldn’t have got a 454” argument. 6, thus causing the system to pour fuel in attempting to compensate. Apr 12, 2016 · Chris had an excellent idea about posting up tuning info, so figured we could have a thread, dedicated to just that. The stroker BHP is already rated at 575. Apr 10, 2016 · I went from around 8 mpg with an Edelbrock 4bbl card to around 11 with the Fitech. Dec 8, 2015 · I am building my 72 with the intention of getting it in the mid 20 mpg range with a fuel injected 454, 4L80 and 3. Ran great last summer but recently getting a problem of the AFR ramping up to full lean at 20. For driving threw the mountains or Road course racing Sep 8, 2017 · Trying to start gathering parts to replace the TBI 454 in my 95 C3500 with 144,000 miles on it. I don't want to Aug 19, 2019 · My dad has a Chevy 454 with the 2x4/dual quad setup. I am also fully aware that poor gas mileage is a symptom that something is wrong. All I use the truck for is pulling a 28' enclosed trailer with my Chevelle inside, and it's quite a load. Feb 8, 2016 · It looks like pretty big bucks to swap out the carb on my mark4 454. 4-liter V8 engine, can vary depending on several factors. Shop FiTech Chevy 454 Fuel Injection Systems and get Free Shipping on orders over $175 at Speedway Motors. I hate external pumps. Oct 31, 2017 · Part of the upgrade is a new manifold and 850 Holly double-pumper. On average, a 454 engine typically achieves a fuel economy of around 12-15 miles per gallon (MPG) in city driving and 15-18 MPG on the highway. 42 gears. Truck has a NV4500 5 speed manual, and I'm keeping it in the truck. Are the gains really worth it? I'd love the reliability and not having to manually tune my car anymore. 3mpg in my truck. . Any suggestions before I switch back to carb? The engine runs an average of 10 to 15 mpg. BBC 454 I went with the 600 HP setup with a new Tanks Inc. com The fuel efficiency of a 454 engine, also known as a 7. Temp sensor this winter was registering 170-ish when warmed up, now I'm seeing 180-190 range with summer temps. Dec 21, 2023 · Does not run rich, no black tail pipes, really clean plugs, no trouble codes. I think this started after he got caught in a rain storm, but he thinks it wasn't running right even prior to that. Technically speaking the doubling mileage (in his experience) was from the 454 Vortec, which according to him is supposed to have different head designs in addition to fuel injection. Check out our featured products online. I like to travel to shows in other states so economy is a big factor in this build. Feel free to copy and Paste this little cheat sheet, and add and post your info: ENGINE SIZE: FITECH SETUP USED: ENGINE VACUUM: CAM SETTING (1,2,3, or 4) AND YOUR CAM SPECS Apr 4, 2018 · We take a look back at the Sniper install we did a few months ago to see if it was worth it. 700r4 transmission, 3. Increasing the gas mileage without sacrificing performance on the vehicle only requires inexpensive and simple changes to the engine. See full list on thecampingadvisor. Replace your current air filter with a high-flow dry or oiled air filter. 4 mpg. I don't want to Nov 16, 2005 · Got a question Rapid, would the OP benefit from ditching the factory TBI setup and changing to one such as FITECH or Sniper to go along with all the changes you've recommended? Is the factory TBI the weak link per se and if going to an aftermarket injection what things should be changed from your previous post? Looking at a 1 ton truck myself that would need these upgrades. Sure, the BB is cold-natured and will need some footwork to start/get warmed up with the carb, but I don't care about that, fuel mileage or added HP. Experience the difference in acceleration, throttle response and more. It would be great to just starting up and not have a choke anymore. Find out whether it stayed on the truck, or, if we removed it. Don't do just terrible May 20, 2017 · Started the install of a FITECH fuel inspection system on a friends 1970 Chevelle. It does not have fitech ignition control. EFI tank and a 255L pump with he Corvette regulator/ filter. Thanks Does anyone have any first hand experience showing that an aftermarket EFI system like FiTech or Holley Sniper provides any fuel economy improvements over a carburetor? I understand the benefits of EFI, and the manufacturers seem to completely avoid making any claims about improved MPG, which I'm sure they do for legal reasons. Apr 9, 2020 · According to my fuel app, I am only getting 5. My 454 as expected gets really bad fuel economy. There's a large hole Upgrade your Chevelle's performance today with the FiTech EFI Total Package. abjp b9jacyc bw dsp ilmg yum qp6 4b7vl wq7f iu9gi
