355 OBD performance chip?

No idea who this guy is but if he's not beating a 355, even a modified one, with a GT4, this is evidence that he's not a very good driver. The GT4 is a weapon, an incredible car that laps the Nurburgring the same as a GT3 and quite a bit faster than a 458 or F430 Scuderia. But a modded 355 is faster? C'mon.

 

Whether you feel he’s a good driver or not, he’s still the same driver driving on the same track so it’s an apples to apples comparison. I don’t follow his GT4 build or runs, but it looks to be a fairly stock 981 GT4? Maybe an exhaust upgrade?

Nurburgring has ton of lengthy WOT sections, so a newer car is most likely going to edge out.

Suzuka Circuit is Formula 1 Circuit and is well balanced between amounts of low, mid, and high speed cornering.

You must be referring to this vid where his lap time is 2 min 27 secs.

 

Let’s see how other drivers fair in a stockish 981 GT4 on Suzuka




Lap time: 2 min 36 secs





Lap time: 2 min 27 secs





Here’s a 991 GT3RS



2 min 24 secs.

 

Not sure how stock this GT4 is but I clocked it at 2 min 24 secs.





Here’s a stockish 718 GT4




2 min 27 secs.

 

Here’s another. Modified/lightened 981 GT4??



2 min 25-26 secs.



Numbers don’t lie. Video footage don’t lie.

 

Here’s the same driver who drove the white 355 challenge. He might be a driving instructor.

Pretty modified 997.2 GT3RS.

Lap time: 2 min 20 secs.

 

Question have any who dyno their car have a 5 gas analyzer I’m the tail pipe or did the tuner just use the O2 sensor for fuel air ratio

And if so I would like to know stock reads through out the range before / after

I have not dyno any of my cars or played with mapping the ecm / chip etc I have done small modifications (cold air intake,headers and stuff for drivability) and now looking to possibly using the car on a track and would like to know more pro and cons on playing with the mapping


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You need to use a wideband o2 sensor to measure WOT air fuel ratio.

The original o2 sensor wouldn't give you any accurate WOT air fuel ratio. (just may tell you it's richer or leaner than stoich)

 

I have seen wide band O2 sensor kits that come with a gauge to mount on the dash
Think it’s worth putting one in


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@INTMD8 The white 355 challenge is still running a stock Y-Pipe AND stock cats, which means he left roughly 20 rwhp on the table on these runs, not to mention a ton of F1 pitch .



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Check this out guys. Once again, same driver as the white 355 challenge (2 min 25 secs). Same circuit (Suzuka). Manual 991.2 GT3.




Lap time: 2 min 27 secs.


Numbers don’t lie. Footage don’t lie.

 

Wait a min. Why does the interior of this car look like a 991.2 GT3?

 

Nevermind… it is a manual 991.2 GT3! Misleading Youtube title .


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I do in all my toys but thats an issue Im working on in therapy

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Lol that’s great




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