Gmc ultimate road cams

1. Saxovch22 Established Member Joined: Feb 2011 Scotland Posts: 1191 02 Saxo Vts

   #1 7th October 2013, 16:21

   Anyone have any experience with these ?
   They look exactly what I'm looking for at a good price!
   
   Just wondering if they will run unmapped ? Would only be for a few months while I decide what management I want etc
   
   With me being in Scotland I've heard good reviews about GMC as a company so I assume the cams will be good
2. hard_corejoeboy Saxperience Forum Bum Joined: Nov 2007 Southend, Essex/Thetford, Norfolk Posts: 4203 Seat Mii Toca/VW Polo Gti 6c 1.8 turbo

   #2 7th October 2013, 16:37

   Im sure the cams will be good. Not sure running them unmapped is such a good idea though. Dunno howmuch they cost but wouldnt purchasing a stand alone ecu first be a better idea?
3. kyle4256 Established Member Joined: Feb 2008 dundee Posts: 1844 saxo vts

   #3 8th October 2013, 10:11

   Yeah they will be good and yeah you can run without a map just adjust timing till it idles happy , then wen ur ready just get a standalone and map it up
4. Saxovch22 Established Member Joined: Feb 2011 Scotland Posts: 1191 02 Saxo Vts

   #4 8th October 2013, 19:05

   Quote:

   Originally Posted by kyle4256 Yeah they will be good and yeah you can run without a map just adjust timing till it idles happy , then wen ur ready just get a standalone and map it up

   Exactly what I wanted to hear!
   Cheers man
5. hard_corejoeboy Saxperience Forum Bum Joined: Nov 2007 Southend, Essex/Thetford, Norfolk Posts: 4203 Seat Mii Toca/VW Polo Gti 6c 1.8 turbo

   #5 8th October 2013, 19:11

   What you want to hear and what happens isnt neccesarily the same...
6. Saxovch22 Established Member Joined: Feb 2011 Scotland Posts: 1191 02 Saxo Vts

   #6 8th October 2013, 20:00

   Quote:

   Originally Posted by hard_corejoeboy What you want to hear and what happens isnt neccesarily the same...

   True but they're very similar to 708s and ph3s and loads of people have ran them unmapped for a considerable amount of time.
   
   Never know if I sort out the ecu side sooner than I think then they will be mapped right away
7. ldavies Saxperience Forum Bum Joined: Mar 2008 Driving my GTI Posts: 2659 Boosted 106 GTI 16V Supercharged

   #7 8th October 2013, 21:11

   Quote:

   Originally Posted by Saxovch22 True but they're very similar to 708s and ph3s and loads of people have ran them unmapped for a considerable amount of time. Never know if I sort out the ecu side sooner than I think then they will be mapped right away

   Exactly same as Kyle said I've ran a set of Newman phase 3 cams unmapped for over a year and a half and if you can put up with them causing the car to idle poor and occasionally cut out then go for it I've put it with it and don't find it too much of a problem.
   I say go for it
8. hard_corejoeboy Saxperience Forum Bum Joined: Nov 2007 Southend, Essex/Thetford, Norfolk Posts: 4203 Seat Mii Toca/VW Polo Gti 6c 1.8 turbo

   #8 8th October 2013, 22:14

   I had some cams unmapped and they stalled every time I stopped at lights.
9. ldavies Saxperience Forum Bum Joined: Mar 2008 Driving my GTI Posts: 2659 Boosted 106 GTI 16V Supercharged

   #9 8th October 2013, 22:20

   Quote:

   Originally Posted by hard_corejoeboy I had some cams unmapped and they stalled every time I stopped at lights.

   Lol that is coz u didn't adjust the idle hence why it kept cutting out.
   I've adjusted mine and only does it now and again.
10. Gabbastard Saxperience Post Whore Joined: Dec 2002 United Kingdom Posts: 8390

    #10 8th October 2013, 22:56

    I retarded my mates catcams and unmapped it just stalls nearly every time it gets to a junction
11. Cam Saxperience Post Whore Joined: Nov 2010 Kent Posts: 8439 Gen 7 Celica 190.

    #11 8th October 2013, 23:02

    I run Catcam '743's' on standerd timing & map and its perfect never had a problem with stalling.
12. axsaxoman Saxperience Forum Bum Joined: Jan 2003 Scotland Posts: 3380

    #12 10th October 2013, 10:52

    these will run fine on std ecu --if idle is rougher than it was with std cams --then close thex cam a lttle --
    ideally if running with no mapping change to a 4.5bar fuel reg that will add enough at top end to stop it gong lean and lambda can sort out the closed loop part of the map no problem .
    If however its not the best idling car before cams,then maybe you should sort that first as higher lift cams will never improve idle