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Part # CA/CJ258 JP1 Emission Legal Version CARB EO #D452 Includes all components plus a remanufactured 4.3L Chevrolet throttle body to convert a 2BBL CJ or Wrangler Jeep to EFI. Specify type and year of Jeep when ordering kit. Emission legal version CARB EO#D452. Many original emission controls are eliminated, which simplifies underhood area. ECM…Howell Fuel Injection problem. :cheers:I have an '86 CJ7 with the 258 motor. I just put on the Howell California-legal fuel injection and it's got problems. It ran fine for about 10-15 miles, but then it idled very erratically and is basically undrivable. Initially, the idle constantly fluctuated from near dying to about 1800 rpm.The Howell system is based on the late 80's - early 90's GM TBI system. I think the TPS uses the earlier type flat connector. You should be able to go to any local parts store and ask for a TPS for an '88 Chevy pickup with a V8.A big help with the tbi efi is install a wideband afr kit. It also might be a good idea to send the ecu out to have it converted to a flashable ecu so most tuners can tune it and dial it in. I think EBL does the …Jul 27, 2009 · I did a junkyard not howell TBI conversion, but I have to believe Howell would also be better. The big improvements: Fuel mileage. Power. Starting. When you take off all the smog stuff, cat convertor, smog air pump all the stuff that smothers the engine, and do a TBI conversion, it runs cleaner and has more power.© 2023 Howell Engine Developments (810) 765-5100 Search for: SearchHOWELL ENGINE DEVELOPMENTS 6201 Industrial Way Marine City, MI 48039 810-765-5100 You have just acquired the latest in Electronic Fuel Injection harnesses. It will allow you to ... Alt TBI systems we service are equipped with the correct matching ECM's and calibrations. Also, because of these unique calibrations, you cannot significantly ...Part # YJ258 Converts L-6 Jeep engine to EFI by adapting 4.3L GM V-6 components and in-line electric fuel pump. TBI adapts directly to Jeep 2 barrel carb inlet manifold. Most old emmission plumbing is eliminated. Improves drivability and fuel economy. For emission legal version of kit order part # CAYJ258. GM ECM replaces …No idea how many grounds. Assume every Howell harness is a bit different (mine was on a Jeep 4.2L). I would assume a bad FPR could cause stumbling but really depends on how its failing. The TBI setup has a diaphragm and spring that reacts to vacuum pressure if I remember correctly. So when the diaphragm goes bad, it doesn't react properly under ...Tennis star Novak Djokovic suggested that men should make more money if their matches are more popular. Here's why equal pay is best. By clicking "TRY IT", I agree to receive newsl...With a small pipe cutter, we pulled the lines away from the frame far enough to allow the cutter room to move. Once the supply line was cut, we capped it and cut the return line per the instructions. We mounted the new electric fuel pump, filter and reconnected the two lines to the new throttle body.With a small pipe cutter, we pulled the lines away from the frame far enough to allow the cutter room to move. Once the supply line was cut, we capped it and cut the return line per the instructions. We mounted the new electric fuel pump, filter and reconnected the two lines to the new throttle body.Whether you're looking to maintain, optimize, or upgrade, we offer competitive pricing on Howell TBI KIT 1972-93 304 360 401 V-8 Jeep/AMC Offroad - K247J304 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.Shown below are installation instructions for a variety of our products and services. Simply click the document you wish to view. To download, right click the link and select SAVE AS to your computer. TBI (Throttle Body Injection) TPI/LT1 (Tuned Port Injection) Vortec/LS1 OtherPublished: Apr 7, 2022. Howell EFI is known widely in the industry for their easy to install GM-based EFI and TBI kits for Jeep CJs, most of which are 50 state emissions legal. Now available are Howell’s Ford Inline 6 and …Aug 16, 2019 · The Ford TBI kit provides everything needed to convert an I6, V6 or V8 engine from carburetor to throttle body fuel injection. Howell EFI Owner Matt Howell says, “For ignition systems other than points, and regardless of the configuration, we are able to develop a TBI kit that will do what you want it to do.Howell EFI now offers TBI kits to convert any first or second Generation Dodge Ramcharger or Plymouth Trailduster to throttle body injection for improved drivability, cold starting and fuel mileage in one plug and play system. Howell's Chrysler TBI systems improve starting and idling with a more consistent tune that equates to improved fuel mileage and drivability.I recently engine swapped my 86 cj7 with a yj 258. Originally a 4cyl. Everything went as expected. It has a unknown hei that came with the engine. I added the pacesetter header and built a 2.5" exhaust with a cat and flow master 40 series. Everything is California legal with carb numbers. First...Finished installing the Howell kit, this weekend. Initial startup was rough, but once I adjusted the timing and tightened some bolts on the exhaust pipe, for the most part it runs great. ... New to TBI and not sure how the computer for the TBI operates when starting a hot engine, but I know that the Carter BBD computer would briefly run in open ...1996 and later Vortec Products (15) 1999-04 GEN III Vortec Products (16) 2001-2006 Sequential Fuel Injection (13)

Part # H243 Engine wiring harness for adapting production GM V-8 and 4.3L V-6 engines into pre-computer vehicles. Two styles available for both 454 and small block V8/V6 applications, 36″ length from engine to ECM connectors. Includes emmission connectors to match pickup truck and van engines from 1987 to 1995. Requires vehicle speed sensor and…I switched to the Howell TBI when I replaced my 4.2 Other than a cold start issue (runs rich till warmed up) It has performed great. Instant throttle response and it has NEVER stalled, reguardless of the angle or situation! The Howell added a few horse power and really cleaned up the engine compartment. MitchPart # CA/JP258 JP1 Emission Legal Version CARB EO #D452 Includes all components plus a remanufactured 4.3L Chevrolet throttle body to convert a 2BBL CJ or Wrangler Jeep to EFI. Specify type and year of Jeep when ordering kit. 50 state emission legal per CARB EO#D452. Many original emission controls are eliminated which simplifies underhood…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 48039.25103 posts · Joined 2011. #13 · Jun 23, 2021. What's odd is Howell claims you need the 5-port CTO for CA, but their diagram shows a 4-port. Even more odd is why would CA require a 5-port, when a 2-port performs the exact same function, with less clutter. I don't know how you left coast boys can live there.

Howell TBI. Jump to Latest Follow 1K views 9 replies 8 participants last post by [email protected] Nov 14, 2020. rob-1 Discussion starter 25 posts · Joined 2020 Add to quote; Only show this user #1 · Aug 28, 2020. I installed the Howell TBI on my 80 CJ7 w 258. Runs great! ...Apr 9, 2019 · Everything needed in one kit for a turnkey Mopar® TBI conversion Marine City, MI, (April 9 2019) – Howell EFI, an industry leader in electronic fuel injection since 1988, now offers a full selection of TBI conversion kits for Mopar® vehicles with an I6, V6 or V8 engine. Developed specific for Chrysler 273, 318, 340, 360,……

Reader Q&A - also see RECOMMENDED ARTICLES & FAQs. The Howell pump on my system has no markings either, b. Possible cause: GM TPI Products. Sort by. Parts & Accessories (11) Wiring Harnesses (7) Fa.