Custom chip tuning at Competizione for the 3.4 liter engine: results.

Custom chip tuning at Competizione for the 3.4 liter engine: results.

Richard and Fernando at Competizione in Gaithersburg found a sorcerer in Italy that knows in-depth how to program the MOTRONIC’s EPROMs.

My goal was to get rid of the big dip at mid rpm (4000 to 6000) that the K&N, test pipes and Stebro exhaust had created on my otherwise stock Mondial T.

http://www.ferrarichat.com/forum/showthread.php?t=180285

Well, the new chip offered exactly what I wanted (I wonder if I should have asked like 500hp? ).

Torque at the hub is up from 212.4 to 219.0, but, much more important, the max torque rpm is down from 5800 to 4200!

The Mondial’s drivability is now the same as before the intake/exhaust modifications, just with about +5 to 6% power/torque across the whole rpm range. If one admits a 15% power loss through the transmission, the car now makes about 315hp and 252 lb/ft at the crank, which is about how the car feels. I may be a bit spoiled, as my daily driver has 460 lb/ft… I also noticed the car revs much higher than before: I lifted the pedal at 8000… I have to ask Fernando about the new limit?

In short: a great improvement, custom tuned to my car. I am very happy and I would recommend you to call Competizione about their custom tuning.

PS1: The AFR is taken at the exhaust. In real life, it converts to 0.5 lower numbers.
PS2: Three lowest graphs were the baseline runs with the K&N and Stebro, but not tuned. The two mid graphs were made last night, in a high CO2 content atmosphere. The light blue graph was this morning.
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I took the Mondial out tonight. Wow. It's really like the old one "plus".

I wonder what it will do on the 1/4 mile? Low 14 or high13s? The engine really wakes up past 4000 and scream all the way to 8000.

My daily driver, a 335 with a piggy back, does the 1/4 mile in the low 13s/107mph, but I get no traction from 0 to 30 due to the lack of LSD.

 

Out of curiosity, I did measure the MAF resistance (PIN 1 & 6) and I got 384 Ω on the right one but 1050 Ω on the left one!!! Anyone ever seen that before?

Other question: how to you remove the round black and aluminum cap to access the tuning screw? I tried to use some kind force (fingers) and prefer to ask before using some more brutal force, given the replacement cost!
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Thanks! (and thanks to ND for his PM). But is not "1050 Ω" way out of whack?

 

With compressed air or some electronic (computer) cleaning solutions?

 

Mine is a 2.5, but the very first Ferrari Competizione tried the new chips on was a 360. On the 360, the top end did not change much but the mid-range torque did improve noticeably. They saw several 2.5, 2.7 and later awaiting shipment.

Best is to give them a call.

 

I still measure 1050 Ω between pin 1 & 6 after a thorough cleaning with Electrical contact cleaning solution.

Ferrari "offers" a new MAF for $1050. After I gave them the BOSCH remanufactured part # 0 986 280 110 Fernando had given me, they came up with a quote of $500 (no core needed).

I ordered one from N_D’s link (thank you Sir) for $249.75 (minus the $66 core). I also ordered on eBay an almost identical SAAB 900’s MAF for $60 to play with.

 

True, but if I screw up the Mondial would be out of commission until the new part arrives. As Fernando confirms the unit was properly set up at 383 Ohms when they did the major service a few months ago, it is possible that the unit went bad anyway.

If the unit is good, that will give me an opportunity to try FerrariAds!

 

So I can just drill the cap out of existence without fear of damaging something behind it?