danny_silva Posted May 25, 2008 Share Posted May 25, 2008 hi guys!! i just had my 2nd cat removed!! i then went for a drive and realized that my boost gauge was reading 10.5 psi.... before it was reading 11psi!! will a exhaust leak effect my boost pressure causing it to read less?? it most have to be very small, after letting the car getting cold again i started it up and have a check on all the weldings!! I didnt feel any air movement coming out!! anyone that than help me on this?? Cheers Danny Quote Link to comment Share on other sites More sharing options...
danny_silva Posted May 25, 2008 Author Share Posted May 25, 2008 anyone has anything to say about this???? Quote Link to comment Share on other sites More sharing options...
miko_supra Posted May 25, 2008 Share Posted May 25, 2008 HMMMMM, well you would definatly know if there was a leak as you would hear it and the exhaust would sound all farty like. Quote Link to comment Share on other sites More sharing options...
danny_silva Posted May 25, 2008 Author Share Posted May 25, 2008 it does a bubling noise at idle and when i drive is sounds good!!very quiet!! i thing prob there is a leak, very small one!!! ill get under the car tomorow with a bit of paper a check again all my weldings!! prob there is one so small that it leaks a small amout of air under hard aceleration causing to lose only 0.5 psi...... not sure!! any help is very apprecieted!! Quote Link to comment Share on other sites More sharing options...
miko_supra Posted May 25, 2008 Share Posted May 25, 2008 not sure what boost increase is supposed to be expected with the second cat removed is...if any Quote Link to comment Share on other sites More sharing options...
danny_silva Posted May 25, 2008 Author Share Posted May 25, 2008 mine didnt increse!! mine went from 11psi to 10.5psi... so my guess is that i have a small leak!!! right?? Quote Link to comment Share on other sites More sharing options...
Homer Posted May 25, 2008 Share Posted May 25, 2008 An exhaust leak that for back will have little to no effect on the boost pressure. The difference you have seen could just be down to air temps and humidity. In the summer mine used to change by as much as 4psi between mid day and the evening. Quote Link to comment Share on other sites More sharing options...
danny_silva Posted May 25, 2008 Author Share Posted May 25, 2008 ohhh i see... ok!! ill keep an eye on this!! lol.. thank you! Quote Link to comment Share on other sites More sharing options...
Guigsy Posted May 25, 2008 Share Posted May 25, 2008 my car boosts to 1.3 bar in the winter. on the hotest day so far im struggling to get 1.2 Quote Link to comment Share on other sites More sharing options...
danny_silva Posted May 26, 2008 Author Share Posted May 26, 2008 thanks guys!!! this is my 1st supra and my 1st turbo car!! so turbo pressures and air temps and humidity are new for me!! lol.. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.