From digest.v4.n850 Wed Jul 17 07:06:01 1996
From: Armand_Aquino_at_mc.xerox.com (Aquino,Armand)
Date: Wed, 17 Jul 1996 06:56:05 PDT
Subject: JC Chip vs. Dinan vs. Stock at Watkins Glen
[Flame suit ON]
I just came from our chapter sponsored driving school at Watkins Glen
(July 10-11) and performed some chip comparisons...
We did NOT do any timed comparisons YET. This was done to avoid the
errors associated with weather conditions, tire adhesion, braking
point, driver ability, etc. There were just too many uncontrollable
variables associated with timing a car.
We used two identical 1995 E36 325iS. In fact the cars are EXACTLY the
same down to the color and options!!! Anyway for those familiar with
Watkins Glen, there is a very nice full throttle acceleration section
starting on the straight before the "esses" and ending at the end of
the backstraight. Top speed in 4th is between 115 and 120 mph.
Our comparison involved visually identifying which car accelerated
faster through this section. We took A LOT of data points. One car
was the "control unit" and the other was the "experimental" unit.
Both cars had the same amount of gas and about the same weight
according to the scale at the Glen. The control car and the
experimental car would swap positions (who was in front and who was in
back) and see which car would out accelerate the other.
With both cars in stock form (but with K&N filters), the cars were dead
even in acceleration.
With the Jim Conforti (JC) chip and the snout coming from behind the
grill to the airbox, the stock car was slightly FASTER but still
noticeable. With the Dinan chip, the Dinan was barely slightly faster
than the stock.
The JC chip was noticeably FASTER than the stock car. The DINAN was
significantly MUCH FASTER than the stock car.
The JC chip feels much better than the Dinan on the street. It seems
to have better and stronger throttle response in the low/mid rpm range
than the Dinan. The Dinan seems to pull faster towards the higher
rpms (5-6.5k rpms)
We also had the chance to do a one time test against an AutoThority
(AT) chip equipped car with the Korman Ram-Air intake on a much longer
stretch of road. The AT chip/Korman Ram intake car was able to
significantly walk away from our Dinan chipped car up until the higher
rpms. Our Dinan chipped car very slowly crept back up to the AT car
in the 6k+ rpms. Note, however, that the AT equipped car was much
heavier by about 130 lbs... According to the owner of the AT car, the
Ram-Air definitely helped a lot although, this was "by the seat of the pants".
My own personal conclusion is to go with the Dinan chip at the track
and the JC chip on the street. But the Dinan chip is definitely
faster from what I've seen. I believe that the Dinan would even be
faster with the Ram-Air intake - which is why I have these parts on
order..... For a cost of $64 shipped, I can't go wrong!!! Removing
the snout that comes from the grill and into the airbox DEFINITELY
REDUCED performance. But the increased audible growl did provide a
significant psychological advantage.
Please note that I have neither affiliation with JC or Dinan nor do I
aspire to. The results noted above were just the facts. I currently
have a Dinan chip for my car...BUT I'd still like to get a hold of a
JC chip for my car to drive on the streets (up until I get the
supercharger)! Yes, it does feel better.
BUT...Just how good is a product if you can't get a hold of it?
[ Help ]