zed240au Posted January 13, 2008 Share Posted January 13, 2008 ok so im getting closer to connecting ls1 putting ls1 in for last time and connecting up one thing ive found is the EVAP Purge Valve just wondering who of the ls1 guys have connected this up and if so what to as i didnt pull engine from car myself have no idea Another question while im asking LS1 guys who of you is running catalytic converters if so what size and brand thanks for any help you can offer Quote Link to comment Share on other sites More sharing options...
rwwisnesky Posted January 14, 2008 Share Posted January 14, 2008 http://www.cardomain.com/ride/2282022 My exhaust is not complete yet. Plan on the two headers going into one 3" cat and a 3" pipe out the back thru a magna flow muffler. The canister has three hoses. One for vacuum, hooked to nipple on air intake, one from tank to canister, and one from canister to engine. I t-eed into the line from the P/S valve cover that runs into the air intake. Good luck. Quote Link to comment Share on other sites More sharing options...
rwwisnesky Posted January 14, 2008 Share Posted January 14, 2008 P.S. I eliminated the EGR valve when I went to the Sanderson headers. Quote Link to comment Share on other sites More sharing options...
janaka Posted January 14, 2008 Share Posted January 14, 2008 I don't plan on running any of the emissions gear on my Z. EGR was already blocked off from the previous owner, no cats are required for me where I live so those won't be back on the car either. Exhuast will most likely be 3" mandrel all the way back to a magnaflow muffler and an electric cutout before the muffler. Quote Link to comment Share on other sites More sharing options...
LS1 240Z Posted January 15, 2008 Share Posted January 15, 2008 have a tuner delete all of it. Quote Link to comment Share on other sites More sharing options...
Phantom Posted April 16, 2008 Share Posted April 16, 2008 RWWISNEWSKI - I looked at the concept of a single 3" exhaust and finally abandoned it. The 3" only has 72% of the flow area of a pair of 2 1/2". I determined I'd need a 3 1/2" to not have increased back pressure and I realized that size pipe would give me significant ground clearance problems. LS1's are notoriously responsive to back pressure - they don't like it. I ended up going with dual 2 1/2" to an x pipe just past the transmission and then routed the drivers side the normal Z route with the passenger side going straight back to the differential where I used a frame clearance section (round to oval to round) and then crossed it over to the stock outlet position on the drivers side and into a dynomax muffer that has dual 2 1/2" inlets and a single 3" outlet. You can see bits of it in my photo album. Quote Link to comment Share on other sites More sharing options...
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