Driving on 708s without remap

1. Gabbastard Saxperience Post Whore Joined: Dec 2002 United Kingdom Posts: 8390

   #1 8th August 2013, 14:57

   mates car is going for a dastek remap on monday, VTS engine fitted with 708s on standard timing marks. Bit lumpy on idle tbh. Thought that changing to a 3.5bar fpr would redress the fuelling imbalance a little in the short drive to the mappers.
   
   All things considered it should be ok to drive, avoiding high revs, shouldnt it?
2. yr51ocw Frequent Poster Joined: Oct 2005 Posts: 751

   #2 8th August 2013, 16:01

   at part load it *should* be ok. The increased overlap will reduce the burn rate at part load meaning that the peak cylinder pressure will occur later meaning that the ignition should be safe. It also partly explains the poor idle combustion stability. Does it have a AFR gauge?
3. Gabbastard Saxperience Post Whore Joined: Dec 2002 United Kingdom Posts: 8390

   #3 8th August 2013, 16:17

   Sadly it doesnt have an afr. Bugger it, if it holes a piston its time for high comps! Which would be a shame as its not my engine but would be me building it :-( lol
   
   Thanks dude.
4. Cam Saxperience Post Whore Joined: Nov 2010 Kent Posts: 8439 Gen 7 Celica 190.

   #4 8th August 2013, 16:36

   It will be fine dude, i been running my 16v on Catcam's 743's for over 18 months now unmapped standerd timing
5. kyle4256 Established Member Joined: Feb 2008 dundee Posts: 1844 saxo vts

   #5 8th August 2013, 17:25

   Quote:

   Originally Posted by Cam It will be fine dude, i been running my 16v on Catcam's 743's for over 18 months now unmapped standerd timing

   do you notice difference in the power after fitting these cam?
6. Cam Saxperience Post Whore Joined: Nov 2010 Kent Posts: 8439 Gen 7 Celica 190.

   #6 8th August 2013, 19:28

   Quote:

   Originally Posted by kyle4256 do you notice difference in the power after fitting these cam?

   Yes you can
7. ThrushMotorsport Established Member Joined: Jan 2011 Aberdeen Posts: 1092 Turbo Saxo vtr, 2010 Octavia VRS TSI, mk3 Ibiza cu

   #7 8th August 2013, 23:08

   found mine pretty flat untill a certain RPM, then pulled nicely, ran mine unmapped for a good ammount of time aswell no problems
8. Gabbastard Saxperience Post Whore Joined: Dec 2002 United Kingdom Posts: 8390

   #8 12th August 2013, 18:57

   Got the car in question mapped today, 152bhp, which wasnt too bad at all.
9. wullvfr Established Member Joined: Jan 2009 killin,perthshire Posts: 1561 Audi a3 1.8sport,kawasaki zx9r c2,Yamaha R1 track

   #9 12th August 2013, 19:21

   What cams are these?when I search catcams on websites like pug1off and kamracinf all it comes away with is different numbers to the ones you mention like 708 etc etc.
10. Gabbastard Saxperience Post Whore Joined: Dec 2002 United Kingdom Posts: 8390

    #10 12th August 2013, 19:24

    iirc theyre 1321708
11. wullvfr Established Member Joined: Jan 2009 killin,perthshire Posts: 1561 Audi a3 1.8sport,kawasaki zx9r c2,Yamaha R1 track

    #11 12th August 2013, 19:45

    Quote:

    Originally Posted by Gabbastard iirc theyre 1321708

    
    Ah I see,refers to the last 3 numbers
    
    And 743's I am told are the ones to go for,no modifications other than a remap and they will work fine.
12. Cam Saxperience Post Whore Joined: Nov 2010 Kent Posts: 8439 Gen 7 Celica 190.

    #12 12th August 2013, 19:52

    Quote:

    Originally Posted by wullvfr Ah I see,refers to the last 3 numbers And 743's I am told are the ones to go for,no modifications other than a remap and they will work fine.

    Decent air filter and a manifold aswell
13. user_65258 Infrequent Poster Joined: Aug 2013 Sheffield Posts: 113 I own a micra turbo and merc

    #13 12th August 2013, 20:36

    what did Ecu cost u ? And map ?
14. Gabbastard Saxperience Post Whore Joined: Dec 2002 United Kingdom Posts: 8390

    #14 12th August 2013, 21:10

    Mapping was about 150, dastek the same.
15. user_65258 Infrequent Poster Joined: Aug 2013 Sheffield Posts: 113 I own a micra turbo and merc

    #15 12th August 2013, 22:07

    what can vts turbo push on standerd engine with dastek Ecu with t2 ?
16. user_65258 Infrequent Poster Joined: Aug 2013 Sheffield Posts: 113 I own a micra turbo and merc

    #16 12th August 2013, 22:52

    Quote:

    Originally Posted by Gabbastard Mapping was about 150, dastek the same.

    where did u get remap done off ?
17. Gabbastard Saxperience Post Whore Joined: Dec 2002 United Kingdom Posts: 8390

    #17 13th August 2013, 16:34

    A Dastek dealer up by Stirling.
    
    As for power figures, no idea. Youll need either a Dastek Q+ or a turbo module for a Q to run a turbo iirc.
18. wullvfr Established Member Joined: Jan 2009 killin,perthshire Posts: 1561 Audi a3 1.8sport,kawasaki zx9r c2,Yamaha R1 track

    #18 13th August 2013, 19:10

    Where is the one in Stirling that does the remap?
19. Gabbastard Saxperience Post Whore Joined: Dec 2002 United Kingdom Posts: 8390

    #19 13th August 2013, 23:50

    Quote:

    Originally Posted by wullvfr Where is the one in Stirling that does the remap?

    Sos motorsport.
20. wullvfr Established Member Joined: Jan 2009 killin,perthshire Posts: 1561 Audi a3 1.8sport,kawasaki zx9r c2,Yamaha R1 track

    #20 14th August 2013, 05:14

    Quote:

    Originally Posted by Gabbastard Sos motorsport.

    That's good to know,I'm not too far away.
    
    Do they have a RR as well?
21. ThrushMotorsport Established Member Joined: Jan 2011 Aberdeen Posts: 1092 Turbo Saxo vtr, 2010 Octavia VRS TSI, mk3 Ibiza cu

    #21 14th August 2013, 09:49

    Yes they have a dyno
22. user_65258 Infrequent Poster Joined: Aug 2013 Sheffield Posts: 113 I own a micra turbo and merc

    #22 14th August 2013, 09:54

    Quote:

    Originally Posted by Gabbastard A Dastek dealer up by Stirling. As for power figures, no idea. Youll need either a Dastek Q+ or a turbo module for a Q to run a turbo iirc.

    Am from Sheffield is there any dastek remappers near me ? Or any other piggy I can use ? I only wana run turbo map for abt 7 psi
23. Dave_P Established Member Joined: Dec 2010 Aberdeen Posts: 2129 Race: 106 Rallye 16v. Road: Mercedes Vito 120 CDI

    #23 14th August 2013, 10:59

    AFAIK the dastek unichip can't increase the std rev limit, if that's still the case your mate will be missing some power as 708's don't peak till 7500rpm normally.
    
    A way round it is to fit an eBay "grp n" chip with a 7800rpm rev limit...
24. Gabbastard Saxperience Post Whore Joined: Dec 2002 United Kingdom Posts: 8390

    #24 14th August 2013, 12:46

    Peak power came at 7k by the looks of it, cams were set to standard marks though as Id been told 708s were made to suit standard timing marks. Doesnt account for manufacturing tolerance variation i suppose. May check them once Ive got my dti back from my mate, then get the car back for a wee map tweak, but in the meantime it seems not a bad result
    
    Flames y0!
    
    
    
    Im under pressure to fit cams and omex to my car now...
    
    
    And a wee video
    https://www.youtube.com/watch?v=jDnx...e_gdata_player
25. axsaxoman Saxperience Forum Bum Joined: Jan 2003 Scotland Posts: 3380

    #25 14th August 2013, 17:08

    never seen 708,s max max power at 7500 --unless you compromise the rest of the power rangeby moving away from designed timings ,loosing everywhere else in the process
    700-7200 is about the best compromise and for use with std ecu close the ex cam till it idles best and max power will be be around 7000-7100
26. Gabbastard Saxperience Post Whore Joined: Dec 2002 United Kingdom Posts: 8390

    #26 14th August 2013, 17:22

    Thanks John. Going to try adjusting the exhaust cam this weekend to see how it goes, as idle is pretty damn rough just now.