Conference terri::cars_uk

    
    Does anyone know how these chip swaps boost power on non-turbo engines?
    
    There's an adverts in MN this week for 170 bhp from the 16 valve
    Vauxhall engine with an explicit statement that this won't affect your
    Vauxhall warranty.
    
    For �125 it sounds a good way to pep up a Calibra (especially when
    combined with the �200 Irmscher spring kit).
    
    Mark

    I expect that they just change the mapping for ignition timing and
    fuel injection, in the same way that turbo-chips up the power (without
    being able to increase boost pressure via wastegate mods).
    
    I remember seeing an advert which repeatedly claimed a 0% increase on
    the GM 16v engine, for ZERO pounds - it said that they (Superchips?)
    couldn't get any more out of it...
    
    Surprised to see that this change wouldn't affect your warranty though.
    
    Which company placed the advert (I only trust BBR) ?
    
    
    John
    

> I remember seeing an advert which repeatedly claimed a 0% increase on
> the GM 16v engine, for ZERO pounds 

Well I can get a 0% increase on anything for �0...

Jon :-)

    I know someone who has put two of those Superchips on his Astra GTE
    16v.
    
    Rob.
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    8-)

    What Car? stuck a new chip in a Cavalier 2.0i GL they ran as a long
    term test, and were told unequivocally by Vauxhall that the warranty
    was invalidated.
    
    Steve

    Has anyone had one of these fitted. I have enquired about it for my
    astra SRi, but before I splash the cash would like to hear from someone 
    who has one fitted.
    
    Graeme

    Re .21
    
    No, I do not know of anyone having fitted these chips, but there
    is an article in CCC (last month I think) which describes the chips
    fitted by PMC (Pete Maiden Components).  In this case, they preferred
    to sell you a new head/cam whatever, but appear to have spotted some
    deficiencies in the standard programming.
    
    The main feature in this article was a 16v Astra upped to 190 bhp,
    although that was not a cheap conversion.
    
    J.R.

Note 1134.79                     Fiesta RS Turbo                        79 of 83
KERNEL::SHELLEYR "Help ! I've got Iraqnophobia"      15 lines   5-FEB-1991 14:23
                               -< Pocket Rocket >-
--------------------------------------------------------------------------------
�    The current issue of "Fast Ford" gives an interesting review
�    of an RS Fiesta fitted with a conversion by Detection Techniques.
�    This increases the bhp from 133 to 165, and ups the 0-60 time from 7.7
�    to 6.6 secs. It didn't give any idea of the cost, it appears you have
�    to send for a brochure.

    I remember reading articles on this engine, which claimed that Ford
    had designed it such that it would not respond (readily) to 'chip
    changes'.  Looks like D.T. have found a solution of some sort.
    
    Regards that company, I sent off for literature on upgrading my
    Lancia - which they happily sent back.  Proudly shown on the front
    of their 'glossy' was this odd looking mechanical device (although they
    do change the 'chip' as well).
    
    When I subsequently chose BBR for my upgrade, they had a cabinet full
    of devices they had removed from 'unhappy customers', prior to fitting
    their own upgrade.  There were a large number of the D.T.-style devices
    in the cabinet, which turn out to be an extremely simple 'bodge'.
    
    What they do is fit this 'adjustable bleed valve' into the pressure
    line to the wastegate (somehow).  It then has the effect of 'fooling'
    the wastegate into thinking that less boost pressure is being generated,
    so delaying the time at which the wastegate opens.  This leads to
    increased turbo boost, but does not 'tell' the controlling ecu of the
    higher boost pressure.  This would explain why there was also a large
    folder at BBR, containing letters of complaint about 'other companies',
    particularly complaining of pinking/knocking from engines that had
    been modded in this way.
    
    I think I have 'said' all this before, but it seems suitable to mention
    it in reply to the Fiesta RS Turdo question...
    
    J.R.
    

    
    John,
    
    What impact does the chip upgrade have on your insurance premium?
    
    I just contacted DT about chips for Vauxhall cars. They claim that their
    chip-only mod for these cars does not affect the Vauxhall warranty. 
    I wonder what Vauxhall say about the matter?
    
    Mark

�    What impact does the chip upgrade have on your insurance premium?
    
    To be honest, I don't know the actual cost.
    
    When I first got the car, I 'upped' my insurance from the Manta.
    
    Subsequently, I had the car 'chipped' and this was included in the cost
    when insurance renewal cropped up.  I was told it would involve some
    loading, but I cannot recall the amount.
    
    The brokers informed me that my existing insurance company was still
    the cheapest at renewal time, so I took their word for it...
    
    Re 'warranty unaffected' - I cannot believe it.
    
    I think this was mentioned in earlier replies in this topic, but
    I bet (expect) you would get a different answer from GM.
    
    Perhaps DT claim that their mod is 'undetectable' (that make them UT?),
    so put their faith in that.  If GM didn't notice the change, then your
    warranty would not be affected !
    
    J.R.

    Hi
    
    I had the D.T (SuperChips) system in my RS Turbo  It came in three
    flavours,  
    
    132 mod to 162 BHP Chip only
    
    132 mod to 192 BHP (what I had) Chips wastegate mods adjustable boost
    valve, and boost guage.  As you could get 15.5 PSI, which on a 1600
    engine might not be to funny, so you limit it to 13.5 PSI.
    
    132 mod to 220 BHP Chips Wastegate and suspension upgrade, reccomended
    for race/sprint use only.
    
    I had no problems at all and was most impressed with the set up, after
    I got used to the huge amounts of torque steer and neck ache.  The
    engine never pinked, but certainly whined on boost (a truly lovely
    sound).
    
    Bruce

�Has anyone got the Weber Alpha system?
    
    Not me - or anyone I know.
    
    Is this the system which uses manifolds compatible with DCOE-type carbs ?
    
    If so, I think that it was 'tried' by one of the monthly car mags.
    If that is the case, and you haven't read the report, I could try
    searching through back issues for it.
    
    J.R.
    
    PS - are you allowed to use that in your race class ?

�    valve, and boost guage.  As you could get 15.5 PSI, which on a 1600
�    engine might not be to funny, so you limit it to 13.5 PSI.
    
    Anyone out there care to tell me what the conversion should be from
    'PSI' to 'BAR' ?
    
    As an aside, comments in CCC this month rave about the Fiat twin-cam
    engine.  They state that if you have the 2-litre lump with a single
    carb on it, you can replace that with a pair of Webers and get 145BHP !
    Makes you think, when GM 16V engine puts out 150, with EFi
    
    J.R.

    
    I wouldn't have thought that tacking on FI was in the spirit of 
    the Eigentek trophy, or would the company review the situation if you
    asked nicely? :^)
    
    Mark
    
    BTW Welcomequote have initiated a trophy for Marcos cars. Only catch is
    that eligible cars must be 1969 steel chassised V6s with a registration
    number starting CLE and ending 100H! :^)

    1 bar is normal atmospheric pressure 14.4lbsf/in2 (I think). Somebody
    care to correct the units, I may have that wrong too. It may also be
    960mm of mercury if I remember my physical chhemistry days (or even
    32ft of water......)

�    32ft of water......)
    
    From scuba training,
    
    	1 Atmosphere (BAR) increase per 10 Metres depth (in water)
    
    J.R.

is 760 mm Hg
or 33.91 feet of water
or 101400(-ish) Nm��
or 14.6(-ish) lb/in�

Not a lot of people know that!

Scott

    and probably fewer care.....
    
    Dave