Hiltoa 0 Posted June 10, 2005 Report Share Posted June 10, 2005 Hi guys, thought I'd say hello - been on the Vortex for years but thought I'd get a more UK biased forum membership too %-6 My Passat VR6 ('93 but with grill - one of the first) has never really run well in the 3 years I've had it and after various garages trying to fix it and many attempts myself, I've finally found the problem! The 42pin connector has got coolant in it at some point and corroded many of the connectors resulting in an unhappy ecu - I bet I've been in safe mode since I got it!Soooo - Ive got stuck in, removed the upper intake manifold, removed the engine side of the harness and while I was at it, the fuel rail and injectors - figure while I'm in there it may be worth giving the injectors a recon'.Is there anything I can do without stripping the engine down much more to realistically release a bit more performance?E.gs :Is it worth replacing the throttle body with a bored out one bearing in mind I'd prefer to stick with my drilled airbox + K&N Panel rather than fit a cone filter?Is there any real advantage in bypassing the TB coolant hoses?Is it worth installing a Bonrath PowerRohr?Anything I can improve with the Inlet manifold(s)? IIRC the very early VR6 manifold (with cast lettering instead of plaggy cover) flows better - or would a Corrado IM improve power?Sorry for all the divvy queries, but you guys seem to know your stuff... Link to post Share on other sites
antera309 3 Posted June 11, 2005 Report Share Posted June 11, 2005 I saw a small improvement by swapping my 2.8 throttle body with the larger 2.9 one. If you can get hold of a larger TB for good money then it's worth doing, especially if you have further mods planned (like a remap).The standard intake tract isn't restrictive, so a power rohr won't produce any more power. However, the standar inlet tracts have a tendency to break (around the crankcase ventilation pipe) and a power rohr will solve this problem. Plus, they look nicer.The corrado inlet manifold is less restrictive than the OBD1 2.8 item, so yes it's worth doing if you can get one (they're difficult to get hold of though). The Schrick VGI manifold is the ultimate, but these are NOT cheap.My advice would be to go for an enlarged throttle body, a BMC CDA induction kit and a custom remap. You should notice a difference straight away! Link to post Share on other sites
Hiltoa 0 Posted June 12, 2005 Author Report Share Posted June 12, 2005 Cheers for that Nick - I'll keep my eye on Ebay then... Link to post Share on other sites
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