![]() ![]() Read about common OBD-1 issues relating to these parts here Bench testing + repair services on capacitors, “IC17” TA8903SN zip, and burnt “Q31” transistor.Non-VTEC to VTEC conversion (USDM ECU’s only).Basic chipping with custom map for USDM & JDM ECU’s.Matter what part number sticker is on the side of the ecu casing (or not). You'll find the knock board on a US P30, P61,īy having a trained eye, the transistors and knock sensor board can be a deadĭistinguish a type of OBD-1 between a non-vtec/vtec and auto/5-speed ecu's no VTEC AUTO ecu trans-lots would look like -all IC lots are filled.Ī dead giveway for an OBD-1 DOHC VTEC B-series VTEC trans-lots which control the on & off switching of theĪuto-transmission trans-lots which control auto tranny relatedĮcu trans-lots look like - totally empty. the 11F0 & 1720 boards and is easily distinguishable if you compare the transistor location as I have in. The 1980 board is a totally different layout vs. This board is only found in the OBD-1 P75 (LS) and all P72 (GSR) ecu's. That Honda uses known as the 02D01980-1502 board These two boards are different in many ways but are similar when itĬomes to specific transistors which is the VTEC & NON-VTEC OBD1 vehicles, with exception The most widley used Honda OBD-1 ecu's around. Of your ecu and look for the board number which What you want to do is remove the top cover Some poor unknowing soul.or a scenerio thereof. Sticker is intended to be and pawn it off to Swap out the internals (such as putting inĪ non-vtec main board into a VTEC casing) with Sometimes (and this is rare) a devious jackass Tampered with, a person can simply look atĪnd go off this as to what type of ecu it is. (I assume) that will show you how to tellĪ P28 from a non-P28 so this kind of scenerioįirst off, this article is only covering these Well, here's the only article on the internet The right ec, or bicker back & forth saying Is he'll either take the ecu back, refund Supposed chipped P28 ecu and give him a piece You then email the chap who sold you this Just to make sure VTEC works.and it does. You realize and lose faith in this ecu thinking More just to make sure VTEC isn't working. but something's wrong - VTEC doesn't kick Rip down the street like your late to work You then go plug the ecu into your car all happy as hell, turn the car on and Part number sticker on the side of the ecuĬasing - you scratch your head and think that'sĪ little odd. So, you're on the prowl for a reprogrammed P28 ecu and you find some fella selling ![]()
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