JimmithiFritters Posted November 6, 2011 Share Posted November 6, 2011 i dont know what these extra little elbow things are on the throttle body. one is lableled "P" one "R" one "E". http://s1130.photobucket.com/albums/m524/JimmithiFritters/ Quote Link to comment Share on other sites More sharing options...
1990LS400 Posted November 7, 2011 Share Posted November 7, 2011 I have no idea but I read all threads with nipples in their titles. :whistles: My guess is that the extra "nipples" are for supplying vacuum to operate devices/options/systems that your car does not have. Or maybe they are for diagostic use. Quote Link to comment Share on other sites More sharing options...
JimmithiFritters Posted November 7, 2011 Author Share Posted November 7, 2011 ive seen other throttle bodies with the same markings but the holes arent drilled out with fittings inserted. my hope was that the "P" is performance and if i switch the hose to "E" thats economy and somehow ill get better mileage. im lucky to get 24mpg highway. mostly i get 21-22 b/c im a leadfooted 20yr old. :P Quote Link to comment Share on other sites More sharing options...
1990LS400 Posted November 7, 2011 Share Posted November 7, 2011 ive seen other throttle bodies with the same markings but the holes arent drilled out with fittings inserted. my hope was that the "P" is performance and if i switch the hose to "E" thats economy and somehow ill get better mileage. im lucky to get 24mpg highway. mostly i get 21-22 b/c im a leadfooted 20yr old. :P You are doing extremely well if you are getting that kind of gas mileage. I rarely did that well with the gen 1 LS400 I drove for 13+ years and I drove fairly gently. Quote Link to comment Share on other sites More sharing options...
landar Posted November 7, 2011 Share Posted November 7, 2011 ive seen other throttle bodies with the same markings but the holes arent drilled out with fittings inserted. my hope was that the "P" is performance and if i switch the hose to "E" thats economy and somehow ill get better mileage. im lucky to get 24mpg highway. mostly i get 21-22 b/c im a leadfooted 20yr old. :P That is youthful thinking but no such luck. The other vacuum lines are probably some sort of emissions for California cars. See the pics on http://www.lexls.com/tutorials/EFI/throttlebody.html Quote Link to comment Share on other sites More sharing options...
1990LS400 Posted November 8, 2011 Share Posted November 8, 2011 That is youthful thinking but no such luck. The other vacuum lines are probably some sort of emissions for California cars. See the pics on http://www.lexls.com/tutorials/EFI/throttlebody.html I don't remember anything on the window sticker of my LS400 I bought new in 1990 and drove for 13+ years saying anything about it having the California emmission system - I bought it in Missouri - but it used all three vacuum lines. I just snagged photo of its engine and exterior from Portland Craigslist - it's second owner just listed it for sale. It is at 295,000 miles and still looks pretty good. The engine photo clearly shows all three "nipples" in use. Quote Link to comment Share on other sites More sharing options...
JimmithiFritters Posted November 8, 2011 Author Share Posted November 8, 2011 thanks everybody, i guess it wasnt as cool as i hoped. Quote Link to comment Share on other sites More sharing options...
landar Posted November 8, 2011 Share Posted November 8, 2011 Jim, is it time to buy back your 'baby'? You need a hobby....plus, you can play catch-up to Billy. That car still (did) look(s) pretty nice. [edit] just looked at pics on craigslist. Those years of salt seem to be getting to her. :cries: Quote Link to comment Share on other sites More sharing options...
billydpowell Posted November 8, 2011 Share Posted November 8, 2011 Jim, is it time to buy back your 'baby'? You need a hobby....plus, you can play catch-up to Billy. That car still (did) look(s) pretty nice. [edit] just looked at pics on craigslist. Those years of salt seem to be getting to her. :cries: Hay guys, I just sold my 99, 7500, so I am only a two LS family again.... and now I need to get the CEL light off, and the "trac-off" light to quit blinking Quote Link to comment Share on other sites More sharing options...
steve2006 Posted November 9, 2011 Share Posted November 9, 2011 thanks everybody, i guess it wasnt as cool as i hoped. The extra nipples for vacuum pipes are only fitted normally to the JDM models known as Toyota Celsiors. Some of these were fitted as standard with Eaton M90 superchargers which used the extra take offs to monitor and control the boost pressure. It sounds like yours has been converted back to standard,pity as the SC models had over 400BHP! :whistles: Quote Link to comment Share on other sites More sharing options...
1990LS400 Posted November 9, 2011 Share Posted November 9, 2011 The extra nipples for vacuum pipes are only fitted normally to the JDM models known as Toyota Celsiors. Some of these were fitted as standard with Eaton M90 superchargers which used the extra take offs to monitor and control the boost pressure. It sounds like yours has been converted back to standard,pity as the SC models had over 400BHP! :whistles: I had to put on my hip boots to read this one. <_< Quote Link to comment Share on other sites More sharing options...
steve2006 Posted November 10, 2011 Share Posted November 10, 2011 The extra nipples for vacuum pipes are only fitted normally to the JDM models known as Toyota Celsiors. Some of these were fitted as standard with Eaton M90 superchargers which used the extra take offs to monitor and control the boost pressure. It sounds like yours has been converted back to standard,pity as the SC models had over 400BHP! :whistles: I had to put on my hip boots to read this one. <_< My Brit sense of humour I'm afraid :D Quote Link to comment Share on other sites More sharing options...
landar Posted November 12, 2011 Share Posted November 12, 2011 My Brit sense of humour I'm afraid :D And a jolly good one at that, old chap! Quote Link to comment Share on other sites More sharing options...
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