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Buick and Ecotec V6 Performance Upgrades

Discussion in 'VR - VS Holden Commodore (1993 - 1997)' started by dufus, Dec 5, 2007.

  1. losh1971

    losh1971 Well-Known Member

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    Absolutely trust Mace gear, more wanted to know if these are as good as MSD? They are quite a bit cheaper. On the V6 type ignition MSD or equivalent seem to be a minor upgrade over stock. Normally I stay away from MSD as on a few different cars and makes they are known to cause problems. But I have it on good advice from a JC mod that the V6 ignition can be upgraded because of the type of ignition it is. I checked the site but couldn't find reviews on coils? Maybe I don't know the site well enough to know where to look, not sure?
     
  2. stick3

    stick3 Active Member

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    i just google mace coils reviews.... but the link not working
     
  3. losh1971

    losh1971 Well-Known Member

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    Yeah that would be why I couldn't see any on his site.

    Another question and it's about bored TB's. Mace claim that the OS TB's will produce more HP. But from what I understand is because the stock one is not a restriction, even at WOT actual HP gains are nil? However it will give the affect of driving like the throttle is depressed further and that is it? I'm cool with that as I assume it means I will have some increased throttle response but it won't have to be in high rev ranges to feel the additional power delivery, is that right?
     
  4. stick3

    stick3 Active Member

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    when i brought my new dashcam it has gps/speed good to see how quick the ute gets to 60. took 6 sec
     
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  5. immortality

    immortality Administrator Staff Member

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  6. losh1971

    losh1971 Well-Known Member

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    Read the entire thread, some good info. Am I right in saying that the Gorst coils are still as good any MSD or similar. I read about LS coils but it sounds like that upgrade is more than a simple bolt on and couldn't ascertain if the mod is an option on the Buick?
    It would seem that there are some minor gains to be made as far as economy goes, as you can run bigger gaps, due the higher output of the Gorst coils; as much as 1L per 100km?
    Also sounds like there is no need to replace the DFI, but it also sounds like it is a good idea to clean it up including the plug & plate and replace the heat-sink paste.
    Spark plug replacement is a no brainer if you want to re-gap. Especially since I have heard of ground straps breaking off and destroying engines, I won't be risking an engine over a $50 set of Bosch Platinum plugs. Probably ask the mech near work to gap the new plugs, since it would only be 10 bucks, to know they are done right.
    I'd be curious to know what the best gap to run on pretty much stock Buick with CAI, Pacies and Mace tune, with the anticipated mods of roller rockers and OS TB, 1.5mm maybe? Obviously these mods are not increasing comp, just flow.
    I primarily run Caltex 95 as that seems to get better economy than 91 and Caltex 95 seems for some unknown reason get better economy that other brands in an equivalent 95. 98 seems like a waste as I haven't had any measureable gains with 98 over 95, maybe 1%, compared to going from 91 to 95, where I'd say it is much as 8%-9%, improved economy, using Vortex.
     
  7. delcowizzid

    delcowizzid on holiday

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    Stock is plenty strong enough and last a long time compared to others .we make 500rwhp on stock coils I would save the money for other upgrades lol
     
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  8. losh1971

    losh1971 Well-Known Member

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  9. losh1971

    losh1971 Well-Known Member

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    Yeah I gleaned that from the PCM thread but if there are economy gains of 1L per 100 to be made then I would have thought a $100 is a worthwhile spend?
     
  10. losh1971

    losh1971 Well-Known Member

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    I have heard the removal of the bell mouth is a muppet mod. Has anyone actually removed it and can say for sure there are gains? I put mine back in when i replaced the mani gaskets, thinking it won't make any difference.
     

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