ericem Posted October 26, 2012 Share Posted October 26, 2012 are you arguing a cbe without a downpipe makes a serious difference???? Link to comment Share on other sites More sharing options...
MiniStiGuy Posted October 28, 2012 Share Posted October 28, 2012 I wouldn't say a "serious difference" but in my 5EAT I personally with my own butt dyno felt that it seems to have a better feel down low and in the mid-range. Plus who wouldn't want the boxer rumble... OEM HID's Rx330 Retro Link to comment Share on other sites More sharing options...
UTwrestler22 Posted October 28, 2012 Share Posted October 28, 2012 ^^ mhm Link to comment Share on other sites More sharing options...
fahr_side Posted October 28, 2012 Share Posted October 28, 2012 90% of the cars I tune are automatics and with the effects of the torque converter thrown in, it's notoriously difficult to measure small differences in torque. That said, there is no reason an automatic should react any differently to an exhaust. Again, far and away the biggest restriction in the exhaust path is the cat section. There's no way that changing anything downstream of that is going to improve things. It's been shown many times that more noise makes people think they have more power. If it can't be measured on the dyno or with a stopwatch, it's placebo effect. I don't care about 'teh rumble mang'. Obligatory '[URL="http://legacygt.com/forums/showthread.php/2008-gh8-238668.html?t=238668"]build thread[/URL]' Increased capacity to 2.7 liters, still turbo, but no longer need spark plugs. Link to comment Share on other sites More sharing options...
Dirtrace95 Posted October 28, 2012 Share Posted October 28, 2012 While playing with exhaust on the dyno..... When you have removed alot of back pressure down low where there is no boost .... there is most times less torque right when you roll on the throttle. But yes most people seem to feel its faster because its louder. I do alot of Harley stuff also. They are the best example of alot of noise. No baffles ??? That bike is a big dog down low but will show some upper mid range gains and alittle more top end. With no back pressure ???? They loose big time because they have no boost to get it back. Most guys with the soft rumble spank the guys with all the noise. People do relate loud to faster. Link to comment Share on other sites More sharing options...
durtymac Posted November 2, 2012 Share Posted November 2, 2012 Hi guys. Im a new Subaru owner , dumb ass and would love some direction on how to get better performance out of my Subaru Legacy BP5 S/W . Its a stock standard 2.0l wagon. Could you give me 5 easy tips in order to improve the performance a little? Thanks in advance. Link to comment Share on other sites More sharing options...
MasAyinde Posted November 2, 2012 Share Posted November 2, 2012 Tip #1: Search. With that said, welcome! Don't forget to search if you have any questions that have likely been covered oodles of times before. Link to comment Share on other sites More sharing options...
Brett Posted March 15, 2013 Share Posted March 15, 2013 While playing with exhaust on the dyno..... When you have removed alot of back pressure down low where there is no boost .... there is most times less torque right when you roll on the throttle. But yes most people seem to feel its faster because its louder. I do alot of Harley stuff also. They are the best example of alot of noise. No baffles ??? That bike is a big dog down low but will show some upper mid range gains and alittle more top end. With no back pressure ???? They loose big time because they have no boost to get it back. Most guys with the soft rumble spank the guys with all the noise. People do relate loud to faster. on that note, would it be better to run open downpipe or have a 3" catback on a turbo car? since, supposedly "the less backpressure the better" is what people have been saying, would it make a difference? Link to comment Share on other sites More sharing options...
MiniStiGuy Posted March 15, 2013 Share Posted March 15, 2013 The best thing is to rid of most of the back pressure so the downpipe on our cars which has 2cat's in it would be the best thing to upgrade first. OEM HID's Rx330 Retro Link to comment Share on other sites More sharing options...
Brett Posted March 15, 2013 Share Posted March 15, 2013 i used to have a catless dp before i had to sell it. what's the point of a cbe if you can just unbolt it after the dp and have no restriction? Link to comment Share on other sites More sharing options...
MiniStiGuy Posted March 15, 2013 Share Posted March 15, 2013 they are for sound mainly. OEM HID's Rx330 Retro Link to comment Share on other sites More sharing options...
I Donated Too laff79 Posted March 15, 2013 I Donated Too Share Posted March 15, 2013 on that note, would it be better to run open downpipe or have a 3" catback on a turbo car? since, supposedly "the less backpressure the better" is what people have been saying, would it make a difference? i used to have a catless dp before i had to sell it. what's the point of a cbe if you can just unbolt it after the dp and have no restriction? you've been here long enough to have known all this already by some rudimentary research, man. Stop being lazy. Link to comment Share on other sites More sharing options...
Brett Posted March 15, 2013 Share Posted March 15, 2013 i'm off and on. some people claim to have noticeable gains with just a catback. typically BSers. I like the reassurance to prove my point to them Link to comment Share on other sites More sharing options...
MiniStiGuy Posted March 15, 2013 Share Posted March 15, 2013 I noticed better response with my 3" catback on my car. It seemed to be more sluggish when I put the stock one back on. Like the low-mid range just seemed to be a bit slower to get moving. I know megan racing did a dyno with a catback and showed in increase in power. you'd have to go back and search for the MR exhaust thread for there dyno sheet though. OEM HID's Rx330 Retro Link to comment Share on other sites More sharing options...
Rattsl Posted March 15, 2013 Share Posted March 15, 2013 My only thing is right now, I'm running catless up and dp, and I'm making 215awhp, and 315ft.lb torque on stock cbe, my aftermarket cbe arrives on Monday, so I'll have it installed by Tuesday and go to a dyno and have it checked. If I lose a bit of power I won't mind, but gaining is always cool. The sound factor is the key. Plus, running full catless....should I expect afterfire effects! :lol: Link to comment Share on other sites More sharing options...
MiniStiGuy Posted March 15, 2013 Share Posted March 15, 2013 you only are making 215hp on a stage 2 setup? I know with my stock DP and the MR quad tip exhaust and a stage 1 protune I dyno'd 230hp/240tq on a dynojet OEM HID's Rx330 Retro Link to comment Share on other sites More sharing options...
Rattsl Posted March 15, 2013 Share Posted March 15, 2013 Awhp, so that's about 260hp. Link to comment Share on other sites More sharing options...
MiniStiGuy Posted March 15, 2013 Share Posted March 15, 2013 well mine would be over 260hp if you are talking crank HP. The dynojet measures power to the wheels. OEM HID's Rx330 Retro Link to comment Share on other sites More sharing options...
I Donated Too laff79 Posted March 15, 2013 I Donated Too Share Posted March 15, 2013 He doesn't know what he's talking about, I don't think Link to comment Share on other sites More sharing options...
Brett Posted March 15, 2013 Share Posted March 15, 2013 lolololo stage 2 with just a dp and an AP map should be at least 230whp. with a good dyno tune, it's usually around 250whp. Link to comment Share on other sites More sharing options...
I Donated Too laff79 Posted March 15, 2013 I Donated Too Share Posted March 15, 2013 lolololo stage 2 with just a dp and an AP map should be at least 230whp. with a good dyno tune, it's usually around 250whp. lolololololZOMGBBQLOLOLOL!!!11!!11! http://legacygt.com/forums/showthread.php/catted-vs-catless-dp-cel-203616.html?t=203616 says the OP of that gem^ People in glass houses... Link to comment Share on other sites More sharing options...
Rattsl Posted March 15, 2013 Share Posted March 15, 2013 Idk then. Link to comment Share on other sites More sharing options...
Brett Posted March 15, 2013 Share Posted March 15, 2013 lolololololZOMGBBQLOLOLOL!!!11!!11! http://legacygt.com/forums/showthread.php/catted-vs-catless-dp-cel-203616.html?t=203616 says the OP of that gem^ People in glass houses... crystal ball Link to comment Share on other sites More sharing options...
Tehnation Posted May 15, 2013 Share Posted May 15, 2013 What are proper fuel trim values for a,b,c,d. Trying to find some kind of reference to see how out of wack my fuel trims are. Link to comment Share on other sites More sharing options...
MasAyinde Posted May 15, 2013 Share Posted May 15, 2013 What are proper fuel trim values for a,b,c,d. Trying to find some kind of reference to see how out of wack my fuel trims are. Ideally? 0 for all. However, no tune is perfect so there will always be some changes made to the fueling by the ECU. Cell A can be between -5 and +5 without having to worry too much, but cell D should be as close to 0 as possible, between -1 and +1 I think. Link to comment Share on other sites More sharing options...
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