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Info from TAP
This post is supposed to include a response and info from Trevor at TAP.
It's taken longer than I planned because my scanner went on the fritz and
my text reader program went along with it. The format is screwed up, but
you should still be able to read it all. It was a four page fax with logo
and header, etc..
Steve
T.P.SOFTWARE+ROVI RACING 904 683 2279 P.02
TEL. 904-683-3000 FAX 904-683-2279
European Spec "CHIP" and Boost Upgrades. Your One Stop Audi Performance Shop
1106 Commercial Way (US 19)
Spring Hill. FL 34606
Hello to all:
My name is Trevor and I am a technician at T.A.P. in Spring
Hill, Fl. I am writing this in response to the many letters in
the net regarding our up-grades. However, before I begin I wish
to stress that I will NOt point fingers, mention names, or
otherwise place blame on either individuals or companies. The sole
purpose of this letter is to shed some light on your many
questions and/or concerns.
The basic up-grade for an Audi turbo car consists of modifications
to the cars computer and a replacement waste-gate spring.
Interestingly enough, the boost set-up instructions, which are
provided with all turbo up-grades, seem to be regularly neglected.
A case in point: our instructions consist of three basic points;
what the maximum boost level should be, where to get an accurate
reading, and how to make any necessary adjustments. It really is
quite simple! Unfortunately I get calls from customers who have
either not followed the instructions or have deviated from what is
written. The most common examples are failure to use a proper
boost gauge and/or not connecting it properly. To get an accurate
boost reading a pressure gauge must be teed in to the line
leading to the computer. This will give waste-gate pressure. The
stock gauge in the car is reading manifold pressure, which is not
the same, and is not very accurate anyway.
A good example has already appeared on the net, actually. The
writer of the letter repeatedly refers to his boost pressure
readings according to the cars in-dash gauge. Strangely enough this
very same writer indicates early on in his letter that he failed
to use a mechanical gauge from the start. At this time I would
like to offer anyone who is interested a set of our instructions.
Simply call and ask us to send you the 'waste-gate spring and
boost level adjustment' instructions. If, after reading them, you
feel they are vague or confusing, I would very much like to have
your input.
T.P.SOFTWARE+ROVI RACING 904 683 2279 P.2
TEL. 904-683-3000 FAX 904-683-2279
European Spec "CHIP' and Boost Upgrades. Your One Stop Audi Performance Shop
1106 Commercial Way (US 19)
Spring Hill. FL 34606
By the way, the up-grade does not 'screw up the OEM boost
readout'. However it does make it somewhat obsolete. Furthermore,
the OEM boost gauge has no effect whatsoever on the over boost
protection mode in the computer.
The next topic i'd like to address is what one writer referred
to as a 'boost sensor cheat'. This is a very interesting
perspective and quite accurate.
The OEM parameters in which a computer is programmed to work
within are exactly what you Audi enthusiasts are seeking to
exceed. You want higher boost pressures and thus more hp. This is
another commonly asked question: 'Way can't I just turn the stock
boost pressure up?' The answer is because the computer, in it's
original form, won't accept the higher pressure levels and will
shut down. In order to avoid this, you must make modifications to
the computer. so in effect, you are 'cheating' the computer.
Please don't confuse the issue though, there is more to it than
simply teasing the stock computer...
As a final note, and somewhat personal one, I am disappointed
that individuals who have the intelligence to ask good questions
on a sophisticated computer network do not seem to use that
intelligence to verify what they hear. Both rumors and 3rd party
reports have a typical tendency to dispel truth and fact. The net
is a great way to get information, but I would suggest using
that info mostly for reference. Investigate what interests you by
going directly to the source and you'll be wiser for it.
Oh, and remember: in the world of corporate combat you'll find
that one company is usually always putting down another.
Sincerely,
Trevor Gurian.
T.P.SOfTWWRE+ROVI RACING 904 68S 2279 P.01
TEL. 904-683-3000 FAX 904-683-2279
European Spec 'CHIP' and Boost Upgrades. Your One Stop Audi Performance Shop
1106 Commercial Way (US 19)
Spring Hill, FL 34606
WASTEGATE SPRING INSTALLATION & BOOST LEVEL ADJUSTMENTS FOR: Audi
5000 T.Q., Audi Q- Coupe T., Audi 200 T.Q. 10v.
1. The wastegate is located toward the back of the engine in the
vicinity of the valve cover. It is a bowl shaped cap with six
8 mm nuts around the rim. By removing these nuts you will gain
access to the wastegate spring. This cap will be under tension
because of the spring so be sure to hold it down while removing
the last nut.;!
2. With all six nuts removed the cap will slide off the studs.
The wastegate spring is under it and will be loose at this
point, so use care not to let it fall.
3. Remove the stock spring and replace it with the up-grade
spring. Re-install the wastegate cap and the six nuts. The nuts
should be torqued snug, but not so tight as to split the sealing
gasket.
NOTE: Our wastegate springs have been engineered to provide between
12.5 lbs - 14 lbs boost pressure at the wastegate. Once
installation of the up-grade spring is complete boost level MUST
be verified using an external pressure gauge. In order to
ACCURATELY read boost pressure, the pressure gauge should be TEED
in-line to the hose which leads to the back of the computer. Do
not disconnect the hose from the computer for testing as the
computer relies on readings from this hose to properly run the
car.
4. With the pressure gauge installed, you may now test the car.
The engine should be under load to attain a proper boost reading.
You may load the engine one of two ways; Either by driving in
fourth gear at 4000 rpm and flooring it. Or by driving in 3rd
gear under hard acceleration but feathering the brake so as to
keep the car from accelerating too fast. Do not allow boost
pressure to exceed 14 lbs! If the needle on the gauge begins to
rise past 14 lbs, back off the accelerator immediately.
TEL. 904-683-3000 FAX 904-683-2279
T. P. SOFTWARE+ROVI RACING; 9O4 683 2279
European Spec 'CHIP' and Boost Upgrades. Your One Stop Audi Performance Shop
P.82
1106 Commercial Way (US 19)
Spring Hill, FL 34606
5. If boost pressure is either too high or too low you may
adjust the wastegate spring tension in the following manner. On
top of the wastegate cover is a small disc about the size of a
nickel. Remove this disc and you will see underneath it an allen
head bolt. This is the wastegate spring tension adjuster. If your
initial boost pressure reading was too high, you will need to
lessen the tension by turning the adjuster screw counter clockwise.
It the reading was too low, turn the adjuster clockwise. For
reference, each two turns of the adjuster screw provides approx.
one pound variation in boost pressure. i.e. If initial pressure
was 13 lbs, two clockwise turns of the adjuster will bring the
pressure to approx. 14 lbs. Mind you, not all cars are created
equal! So use this reference only as a guide. Remember, it's
what's on the boost gauge that counts. The maximum allowable boost
pressure is 14
Total Audi Performance will assume no responsibility and/or
liability for wrong adjustment of the boost. Any damage which
occurs to the engine or any other part of the car will be the
sole responsibility of the installer. Technical assistance is
available by calling 904-683-3000 between
9:00 am and 4:30 p.m. EST.