New exhaust, feels slower...

1. Robbie1984 Infrequent Poster Joined: Jul 2010 Salisbury, Wiltshire Posts: 155 W Reg Saxo VTS

   #1 26th July 2010, 15:55

   Hey guys
   
   Fitted a new saxsport decat exhaust on saturday, but ever since its been fitted it feels like its actually slower than before, doesn't seem so quick accelerating as it did before.
   
   Any suggestions?
2. Carlvtr88 Saxperience Post Whore Joined: May 2009 Birmingham Posts: 5801 1.1 106 XN Time, MK2 VTR 01. Ford Focus ST3 CP320

   #2 26th July 2010, 16:36

   How bigs the tip might be something to do with pressure and all that malarky. Sometimes having not the right balance can loose you presure in exhaust. Something on the lines of that anyway. What size is the exhaust ?
3. Robbie1984 Infrequent Poster Joined: Jul 2010 Salisbury, Wiltshire Posts: 155 W Reg Saxo VTS

   #3 26th July 2010, 16:38

   It was the 3" oval road system I went for out of the 2 they do, It may just be me but it really doesn't seem to feel like it has the kick that it had with the factory standard system.
4. Carlvtr88 Saxperience Post Whore Joined: May 2009 Birmingham Posts: 5801 1.1 106 XN Time, MK2 VTR 01. Ford Focus ST3 CP320

   #4 26th July 2010, 17:00

   hmm, Maybe your right, Maybe its placebo.. Not sure mate. I have a 3 inch tailpipe,its a custom Zorst system on me VTR, i rekon i gained a pony or two. feels nice. Wouldnt say i lost any.
   
   The manifold will make the bigger difference i believe.
5. LSOfreak Saxperience Addict Joined: Jan 2008 west london Posts: 13810

   #5 26th July 2010, 17:25

   the saxsport shouldnt make it slower. if you added a powerflow 4inch exhaust then maybe...
6. Robbie1984 Infrequent Poster Joined: Jul 2010 Salisbury, Wiltshire Posts: 155 W Reg Saxo VTS

   #6 26th July 2010, 17:34

   Yeah I think a manifold will be the next upgrade for performance, got a few smaller/cheaper things to work on first while I save some cash up for that, just out of interest how much does a decent manifold cost these days for a vts?
7. jonezy Established Member Joined: Jul 2007 Carnforth (lancaster) Posts: 1617 55 CTR premier '97 posi vts

   #7 26th July 2010, 18:13

   its prob just revving a bit more freely so you dont notcie when it picks up
8. baker556 Saxperience Forum Bum Joined: Mar 2007 127.0.0.1 Posts: 4826 oem+ sax

   #8 26th July 2010, 19:14

   If you also decatted i.e straight through system the power will be at the top of the revs and as there is less back pressure not as much at lower revs. Now go give it a blast round the back lanes and tell us if it feels quicker
9. Robbie1984 Infrequent Poster Joined: Jul 2010 Salisbury, Wiltshire Posts: 155 W Reg Saxo VTS

   #9 26th July 2010, 22:46

   Quote:

   Originally Posted by baker556 If you also decatted i.e straight through system the power will be at the top of the revs and as there is less back pressure not as much at lower revs. Now go give it a blast round the back lanes and tell us if it feels quicker

   Yeah I did Decat, so the power only really kicks in after 4k RPM??? I'll give it a blast tomorrow on the way to work, so try to keep the revs higher on gear changes to compensate the loss of power in the lower ranges?
10. baker556 Saxperience Forum Bum Joined: Mar 2007 127.0.0.1 Posts: 4826 oem+ sax

    #10 27th July 2010, 14:37

    any luck?
11. user_42892 Frequent Poster Joined: Mar 2010 high wycombe Posts: 848 Astra VXR

    #11 27th July 2010, 14:49

    see i raced a standered vtr mk2 100bhp version again mine mk2 vtr 100bhp with piper 4-1 manifold decat magnex full exhaust and pipercross induction. and he was just pulling away from me.
    
    now i thought mine would of won but a miles.
12. Aly Saxperience Addict Joined: Apr 2007 Sunderland Posts: 10341

    #12 27th July 2010, 15:38

    Weird this, when I fit my Pugsport to my GTI on a standard Manifold it instantly felt much much quicker. Pulled very well, plenty of torque low down and no flat spots all the way to the red line.
13. Robbie1984 Infrequent Poster Joined: Jul 2010 Salisbury, Wiltshire Posts: 155 W Reg Saxo VTS

    #13 27th July 2010, 20:59

    Quote:

    Originally Posted by baker556 any luck?

    Well I had an opportunity when I pulled out of work earlier to boot it, so I did. Seems the power has shifted up the rev range a bit, seems to really pick up at about 3.5k rpm now, so I'm happy again
14. baker556 Saxperience Forum Bum Joined: Mar 2007 127.0.0.1 Posts: 4826 oem+ sax

    #14 28th July 2010, 14:05

    Good stuff, you will now be using lots of petrol !
15. nappert Frequent Poster Joined: Jan 2010 Dundee Posts: 586 VTR also used to have Saxo 1.1i and Datsun cherr

    #15 28th July 2010, 14:14

    we're only drivin VTR/S's. what do you expect? Its hardly gonna have the power of a Golf.GTI, blah blah.
    I'll also bet its your imagination. You'll not get any noticable difference.thats all horseshit.sorry but its true.I read a post yesterday,i think,and the guy thought he'd gained an extra horse(by fitting another exhaust!)-how the hell did he think that?what-because it sounded faster! And "back-pressure!"Jeez-its not a formula 1 car
16. Robbie1984 Infrequent Poster Joined: Jul 2010 Salisbury, Wiltshire Posts: 155 W Reg Saxo VTS

    #16 28th July 2010, 14:22

    Quote:

    Originally Posted by nappert we're only drivin VTR's. what do you expect? Its hardly gonna have the power of a 16v blah blah. I'll also bet its your imagination. You'll not get any noticable difference.thats all horseshit.sorry but its true.I read a post yesterday,i think,and the guy thought he'd gained an extra horse(by fitting another exhaust!)-how the hell did he think that?what-because it sounded faster! And "back-pressure!"Jeez-its not a formula 1 car

    Actually it is a 16v I drive....
17. nappert Frequent Poster Joined: Jan 2010 Dundee Posts: 586 VTR also used to have Saxo 1.1i and Datsun cherr

    #17 28th July 2010, 14:32

    oops!even so mate.what difference is it gonna make really speed-wise?I think honestly its all blown up outta proportion about exhausts.probably 90% hype.what do you think?
18. Robbie1984 Infrequent Poster Joined: Jul 2010 Salisbury, Wiltshire Posts: 155 W Reg Saxo VTS

    #18 28th July 2010, 14:42

    To be honest now that I've found out that the power has shifted slightly higher up the revs, over all it does feel a bit quicker (probably due to being a de-cat and a lighter system over the standard). Definitely does seem to rev alot more freely then before
19. nappert Frequent Poster Joined: Jan 2010 Dundee Posts: 586 VTR also used to have Saxo 1.1i and Datsun cherr

    #19 28th July 2010, 14:52

    mmm.interesting
20. Ben_L Saxperience Post Whore Joined: Feb 2005 Billericay, Essex (England) Posts: 6774 1.1.1i, 2.Mk2 VTR 3.Astra SRI 150

    #20 28th July 2010, 23:54

    the back pressure will make a difference too. if you drive with an exhaust with a hole in it, the car is going to be more sluggish. Same thing if you have an exhaust with a too bigger bore.
    
    glad ur pleased with the purchase now mate