24x Conversion Hardware
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About us
We specialize in GM fuel injection systems for SBC, LT1, and the variety of LS engines. Since 2003 we have been manufacturing brand new fuel injection engine harnesses and connector pigtails for GM engines and offering replacement harness components for GM fuel injection harnesses.
Modernize Your Early SBC, TPI, or LT1/LT4 Engine
Our 24x systems and 58x systems bring Gen III LS1 PCM control and Gen IV LS3 ECM control to these popular engines. Our 24x solution is the only replacement to the troublesome LT1 optispark distributor and has enabled amazing potential for these engines; even 8,000 rpm capabilities!
Modernize Your Early SBC, TPI, or LT1/LT4 Engine
Our 24x systems and 58x systems bring Gen III LS1 PCM control and Gen IV LS3 ECM control to these popular engines. Our 24x solution is the only replacement to the troublesome LT1 optispark distributor and has enabled amazing potential for these engines; even 8,000 rpm capabilities!
Seller Feedback (7,172)
- r***r (87)- Feedback left by buyer.Past 6 monthsVerified purchaseProduct arrived in original packaging in brand new condition, as described in the ad. Shipping was fast and arrived ahead of schedule. Communications with EFI Connection LLC was above average and response was within 1-2 hours. I will repeat business with this seller. LS Swap Benchtop ECM Harness- build was a success using this OBD II connector.
- e***e (434)- Feedback left by buyer.Past monthVerified purchaseOn time, safely packed, as described, perfect fit, great price, good seller.
- l***l (587)- Feedback left by buyer.Past 6 monthsVerified purchaseItem as described. Fast shipping. Well packed. Good person to deal with.A++++++++++
- f***b (2739)- Feedback left by buyer.Past 6 monthsVerified purchaseHigh quality LT1 throttle body gasket set. Great price. Fast shipping. Accurate description. Highly recommended seller. All 5 star ratings. Thank you.
- 1***s (152)- Feedback left by buyer.Past yearVerified purchaseAnother seamless transaction!! Excellent customer service and communication!! FAST shipping!! Item as described!! Perfect!! Highly recommended seller!! AAA+++++
- 8***s (35)- Feedback left by buyer.Past 6 monthsVerified purchaseExcellent product, great service, fast shipping, and great price, would recommend this seller and product to anyone purchasing the product. My review is from a legitimate eBay buyer.