noelawinslow Posted June 3, 2013 Share Posted June 3, 2013 (edited) I'm looking to collect a list of economic alternatives to the stock PTU. The GM HEI upgrade has had mixed reviews, but its install write-up is here, courtesy of Skittles. Www.zdriver.com/forum/showthread.p hp?t=27569 Has anyone used junkyard transistors? Any tips for compatibility? EDIT FOR MECHANICS Edited June 3, 2013 by noelawinslow Quote Link to comment Share on other sites More sharing options...
NewZed Posted June 3, 2013 Share Posted June 3, 2013 (edited) Many of the mid-90's Nissans, like the Pathfinder, used a 3 wire power tranistor that looks like it would work. Ground, ECU Pin1 and coil primary circuit. Same basic design as the ZX turbo systems. The wrecking yards are full of them, or about $60 to 120 at RockAuto.com Attached a drawing from the 95 Pathfinder FSM, Page EF & EC 235. Edited June 3, 2013 by NewZed Quote Link to comment Share on other sites More sharing options...
michaelp Posted June 3, 2013 Share Posted June 3, 2013 I explained to my buddy Raff (Careless) how to do an upgraded PTU from a Pathfinder ages ago...he then did a writeup. Its a awesome upgrade that improves spark greatly...myself and many others since we told people about it have noticed huge improvements in driveability. Its NOT plug and play though, but almost. http://z31performance.com/showthread.php?18665-Upgrade-to-PRW-2-Ign-Control-Module-(Power-Transistor-Unit) Quote Link to comment Share on other sites More sharing options...
HowlerMonkey Posted July 28, 2013 Share Posted July 28, 2013 (edited) I get them for like 12 bucks from the local junkyards off of any VG30e engine.......later is better simply because the part is newer.......I forget what I pay for it with the coil. I also get the little resistor/condensor, the coil, bracket, and a bit of harnessing that has the connectors and find they work great for Z31 or even L28et. It makes for a neat and tidy package. Edited July 29, 2013 by HowlerMonkey Quote Link to comment Share on other sites More sharing options...
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