- This kit does not have a California E.O. # (exemption order) - In the state of California this kit can be installed on 1975 or earlier vehicles only For converting an I6, V6 or V8 engine from carburetor to throttle body fuel injection. Uses remanufactured GM throttle body appropriate for engine size. Operates GM…Fuel injection for in line 6 The 1967 - 1972 Chevrolet & GMC Pickups Message Board Register or Log In To remove ... Get an Offy 4bbl manifold and put a holley pro-jection or try to put a Howell 2bbl gm style system on the stock manifold. 11-05-2009, 08:59 PM #4: 71swb4x4. Senior Member . Join Date: Nov 2003. Location: Brookings, …Part # K247C Universal 6 cylinder TBI EFI Kit that will convert a carbureted V6 or in-line 6 cylinder engine to GM Throttle Body Fuel Injection system. Several adaptors are available to adapt TBI to your intake manifold. Inquire for availability. Past experience has shown a significant improvement in fuel economy from this conversion.TreeClimber1. 361 posts · Joined 2011. #3 · Nov 28, 2011. I have Howell EFI on my AMC 401. Engine has been transplanted into a YJ (but it's essentially the same as a CJ) My mileage is comperable to when I had my motorola 2100 carb. Little bit more power, and little bit more (percieved) economy. But I never really checked exact numbers.howell fuel injection conversion Jump to Latest Follow 9K views 12 replies 10 participants last post by jbolty Oct 11, 2009The Howell TBI is a fuel injection conversion kit based on a TBI system found on GM 4.3 liter V-6 engines. This kit is one of only two made for Jeeps that can be ordered California smog legal. The other kit is the Mopar MPI but it typically costs twice the amount. Both the Howell TBI and the Mopar MPI solve the problems typically associated ...The shop is full of fuel injected CJs! #jeep (Howell fuel injection) Video. Home. Live. Reels. Shows. Explore. More. Home. Live. Reels. Shows. Explore. Fuel Injected CJs using Howell. Like. Comment. Share. 710 · 49 comments · 26K views. Collins Bros Jeep · February 17 ...Fuel pump and injectors energized meaning the tach filter was bad. New Tach Filter from Howell was 50 bucks plus shipping, some good non-insulated connectors and heat shrink and the jeep is back in business for less than 70 bucks. 87 wrangler, D44, 8.8, lift 2.5 on 35s ... I thought fuel injection was something junkies did. Good Luck, L.M ...The Ford TBI kits are ideal for increasing drivability, and improving fuel mileage and cold starting in older street-driven classics and 4-wheel drive vehicles. The …Tweet. #6. 11-29-2015, 09:15 PM. Code 21 Throttle pos sensor above 2.5 volts for 2 seconds when engine speed below 1600 rpm. Code 22 Throttle pos sensor below .2 volt for 2 seconds while engine running. A couple things you mentioned all relate to the grounds since that is what the GM ECM system operates on.1429 posts · Joined 2009. #4 · Mar 13, 2015. I found when troubleshooting my TBI conversion that the first thing to do is check the fuel pressure at both the inlet and outlet first. As stated above, inlet ~12 psi, return ~3 psi or less. While the paper clip thing kinda works, using a laptop gives you vastly more live information..No fuel leaks. As of now, no stored codes. Block learn 130 123 at idle 123 at cruise (Which are all correct) When I spoke with Howell, they mentioned that even a 2psi difference in fuel pressure will creat big issues. I wasn’t sure what the result generally is when fuel pressure is too high (other than running rich).The Howell fuel injection system is a popular choice for those looking to upgrade their vehicles or convert them from carbureted to fuel injected. It offers improved fuel efficiency, better throttle response, and increased power output. However, to properly install and wire the Howell fuel injection system, it is important to have a clear ...good to hear from the Affordable Efi crowd. i wondered about thier setup. one selling point of thiers is that they priced it about $100 cheaper than howell. they are probably just as good and thier harness looked good in the pics, i just didn't see any writups on them anywhere. probably just the same as howell.Very popular for older street-driven vehicles or 4 wheel drive vehicles. Contains all sensors, components, wiring harnesses, ECM and fuel pump to install fuel injection on your engine. Custom calibration PROM for your engine. ECM installs under dash. Fuel pump installs in main fuel line, and bypass fuel is returned to the tank.Only £5.98 with Motoring Club premium. Compare. Add to Basket. View details. Cataclean Petrol- Complete Fuel & Exhaust System Cleaner 500ml. (251) At Halfords we've got engine oil additives and engine flushing products that will keep your car purring and performing. Buy online with free delivery.Howell Engine Developments Fuel Injection Conversion (California Legal) for 72-81 Jeep CJ-5, CJ-6, CJ-7& CJ-8 with AMC-401 8 Cylinder. In Stock. $2,328.99. Howell Engine …But for the dollars spent I could have swapped in a used 4.0 motor complete after it was all said and done. $1700 for MPI (cost) + installation, $250-400 for head swap. I have seen complete motors from cherokees for less than $1500 - used. RockBottom did the motor swap just before I did the MPI. I really believe he got the better deal.No fuel leaks. As of now, no stored codes. Block learn 130 123 at idle 123 at cruise (Which are all correct) When I spoke with Howell, they mentioned that even a 2psi difference in fuel pressure will creat big issues. I wasn't sure what the result generally is when fuel pressure is too high (other than running rich).Products - Howell EFI Jeep LS LT Vortec EcoTec3 & GM Based EFI Conversions. (810) 765-5100. Blog.Howell EFI T-Shirt $ 25.00. Add to cart. 454 & 502 TBI Kits. #DF220 – Dual Fan Control Kit $ 95.00. Select options. Complete TBI Kits. #HJ232 – 232 CID I6 Jeep ...Whether you're looking to maintain, optimize, or upgrade, we offer competitive pricing on Howell Throttle Body Fuel Injection Kit - CA-JP258 for your Truck or Jeep at 4 Wheel Parts. With our selection of quality brands and expert advice, we help boost your vehicle's performance and make a statement on or off the road.Howell Engine Developments Fuel Injection Conversion (California Legal) for 72-81 Jeep CJ-5, CJ-6, CJ-7& CJ-8 with AMC-401 8 Cylinder. In Stock. $2,328.99. Howell Engine …Learn the differences and similarities between howell efi and holley sniper, two popular fuel injection systems for cars. Find out their performance, cost, installation, and maintenance features and advantages.Learn how to install a HOWELL EFI kit that replaces your Jeep carburetor with a GM throttle body fuel injection unit. The kit is legal for all 50 states and provides improved …The HOWELL Jeep EFI kit uses a new General Motors throttle body fuel injection unit from the 4.3L V-6 engine to replace your existing Jeep carburetor. It is fitted to the stock Jeep intake manifold with an adaptor supplied in the kit, and controlled by a GM vehicle ECM (computer) using a coolant sensor, MAP (Manifold Absolute Pressure) sensor ...1 howell fuel injection- Throttle Body System (thay Make a CARB Compliant and a Non-Compliant System) 2 MOPAR EFI (True Tune Port System) F.A.S.T. Makes a Throttle Body non-CARB Throttle Body System. and of course there are posts on this site that will direct you on how to scavenge a EFI from a latter model 4.0 Wrangler. Good Luck.California Smog Legal Version CARB E.O. #D-452-2 Howell EFI announces arrival of new fuel injection conversion kit for classic Jeep Wagoneer and Grand Wagoneer Marine City, MI - March 10, 2015 -The 1971-'93 Jeep Wagoneer and Grand Wagoneer have a huge following among off road enthusiasts. Howell EFI has recently released a carburetion to…Howell fuel Injection Conversion- smog certified Just passed smog Registered for a year Performance- Davis Unified Ignition 2"lift Heavy Duty cargo Rack Tuffy locking center console and speaker and storage security set Crappy 80s paint post id: 7752814530. posted: 2024-06-01 11:09.CJ7 Howell Fuel Injection. Jump to Latest Follow 21 - 28 of 28 Posts. 1 2. R. rawracing · Registered. Joined Mar 15, 2006 · 53 Posts. Discussion starter · #21 · Feb 6, 2008. Only show this user. Would you suggest a " DUI"? ...CJ7 Howell Fuel Injection. Looking for advice on my Howell Fuel Injection. 1986 CJ7 stock 258 135,000 miles. The engine stumbles on acceleration, when leaving from a stop light it falls on it's face and sometimes backfires. Howell has built 5- different chips changing fuel delivery.Howell fuel injection wiring. I am in the process of installing a Howell fuel injection kit in my 89 Wrangler. I have the old computer wiring out into the engine compartment and am removing unnecessary wiring. I know that I need to retain the manifold heater relay, but I am wondering if all of the wiring associated with the diag connector ends ...Learn how to install a Howell throttle-body injection system on a 1986 Jeep CJ-7, a retrofit that improves performance, driveability, and mileage. See photos and tips for the installation process, as well as other upgrades for the engine and ignition.Howell EFI tach reference. Installed a Howell EFI eight years ago. Recently it failed smog due to the fuel pressure too high. Fixed it and went to the certified gross polluter smog who failed the vehicle because I had installed a DUI distributor and it doesn't have an EO# (yes moving from California would fix that but not the next problem).GM TPI Products. Sort by. Parts & Accessories (11) Wiring Harnesses (7) Facebook. (810) 765-5100.Published: Aug 16, 2019. Howell EFI now offers Ford TBI kits for any classic carbureted inline 6 or V8 Ford application. The Ford TBI kits are ideal for increasing drivability, and improving fuel mileage and cold starting in older street-driven classics and 4-wheel drive vehicles. The Ford TBI kit provides everything needed to convert an I6, V6 ..."The business came about because GM started coming out with electronic fuel injection on everything and there was no easy way to adapt those engines into other vehicles using the factory harness," said Bill Howell. From its humble beginning in Bill's garage, they have now expanded into a building thats almost 10,000 sq. ft. with an ...Plastics injection molding is a widely used manufacturing process that involves injecting molten plastic into a mold to create various products. While it has revolutionized the pro...I have a 1990 GW and I'm looking into getting a fuel injection kit installed. I did research online and ended up more confused than anything. I have very limited knowledge about the motor for the GW so any help would be appreciated. I've noticed fuel injection kits range from $600-$3000+. I've seen Howell, Sniper and Holley talked about lots.How to install a Howell Electronic Fuel Injection on a Jeep Wrangler. We have heard about the Howell system and since it is one of the more popular fuel …How to install a Howell Electronic Fuel Injection on a Jeep Wrangler.We have heard about the Howell system and since it is one of the more popular fuel upgra...Aug 10, 2011 · 1258 posts · Joined 2010. #21 · Aug 11, 2011. The JY TBI will be better for emissions than howell because it controls spark. Besides the harness and tb every other part can be purchased for less than a howell kit! If you take your time and lay the wires out it is really simple.Howell EFI T-Shirt $ 25.00. Add to cart. 454 & 502 TBI Kits. #DF220 - Dual Fan Control Kit $ 95.00. Select options. Complete TBI Kits. #HJ232 - 232 CID I6 Jeep TBI Conversion Kit $ 1,500.00 - $ 1,560.00. Add to cart. 454 & 502 TBI Kits. #F219 - Electric Fan Control Kit $ 50.00. 1 2 Next. Facebook; Instagram;Sep 29, 2011 · TreeClimber1. 361 posts · Joined 2011. #3 · Nov 28, 2011. I have Howell EFI on my AMC 401. Engine has been transplanted into a YJ (but it's essentially the same as a CJ) My mileage is comperable to when I had my motorola 2100 carb. Little bit more power, and little bit more (percieved) economy. But I never really checked exact numbers.Contact Us - Howell EFI Jeep LS LT Vortec EcoTec3 & GM Based EFI Conversions. You can send us a message using the form below. (810) 765-5100. (810) 765-1503. Howell Engine Developments, Inc. 6201 Industrial Way. Marine City, Michigan 48039.howell fuel injection issues. Jump to Latest Follow 2K views 2 replies 3 participants last post by Michaelgoesrawr May 18, 2014. B. broncocruiser Discussion starter 1 post · Joined 2014 Add to quote; Only show this user #1 · May 17, 2014. i just installed a new motor in my jeep. 258 with howell fuel injection. everything is new. new ignition ...The Howell completely replaces fuel and spark with a mapped system that matches a specific engine profile. That's fine if you have a good stock 4.2 motor. The Holley system on the other hand relies on a stock ignition system (fixed by the existing timing curve of the distributor) and adds a superior self calibrating 'wide band' O2 sensor.The Howell TBI is a fuel injection conversion kit based on a TBI system found on GM 4.3 liter V-6 engines. This kit is one of only two made for Jeeps that can be ordered California smog legal. The other kit is the Mopar MPI but it typically costs twice the amount. Both the Howell TBI and the Mopar MPI solve the problems typically associated ...