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Greetings, The exhaust is a 1 and 3/4 inch extractor system with a glass pack style muffler, but its not a glass pack. A company (Redback) here makes baffled 'cylindrical' mufflers which are much quieter. Whole thing fits behind the rear valance and the tip you see is the exit pipeI welded to the muffler. Heater boxes are still connected (modified at inlet) because its my wife's car and she and the kids like the heat in winter. I can take some pix of the exhaust if anyone wants to see. The carby linkages are bent simply because I had too make them short enough after balancing the carbs (with linkages disconnected). It took some time to set the carbs up and get the chokes etc etc working just right. I have 'early' PDSITs and 'late' and my first choice (the early) were never quite 'perfect' no matter how much I fiddled with them (after rebuilding completely). Backfiring/popping and extractor exhausts I actually found the later carbs are sweet (after rebuilding). But the car was suffering from the 'popping' exhaust syndrome when changing down suggesting a lean mixture. But plugs were good - car was not lean while driving. I ended up blocking the idle compensation valve off and just using the idle mixture screw to adjust idle mixture. My guess is this valve in the later carbs was a fix for US smog regs and its sole purpose is to lean out the mixture at idle. While I know PDSITs 'transition' slowly to idle blocking off the compensation valve solved the popping problems on deceleration. Might be something else to think about when fitting an extractor system? No sign of the engine 'loading up' (being far too rich) at idle either....... Your thoughts? RobK http://www.pipeline.com.au/users/hoopty ------------------------------------------------------------------- Unsubscribe? mailto:type3-request@vwtype3.org, Subject: unsubscribe