So, is getting a flash the only way to safely run more boost???

I'm a 996tt newb so please bear with me.

I always heard how easy it is to crank up the boost on turbo cars, but it seems like a mystery and all 996 tt guys get it "flashed"...

What's the real deal..???

 

The DME's do not react to more boost without a flash to modify the fuel tables. I thought about doing the same thing myself. Now you can get a flash THEN crank the boost up. I think Jimmer was running 1.5bar almost on K16's with a EVOMS Stage 2 flash. His car def. hauled some major ***!

 

How about this idea:



Hook it up to something and let her rip!!!!

 

Boost controller....?

 

It was cheaper to get a car that already came with the turbos

Seriously thou. Doesn't the DME do a shutdown at 1.2 boost? which would mean that it does in fact adjust the values up to that level? Also, if I'm correct the FPR should adjust the fuel pressure to compensate with extra fuel. The DME should take care of the injector pulse and the timing. Most othere MAF based cars are fine with it.

I know this isn't a Supra, but isn't it a fact that you can crack up the boost on a stock supra with under $100 worth of hardware?

 

The 996tt has an airflow and boost limiter in the stock ecu. You can easily fool these and run a MBC.... But why you would risk damaging this expensive of a car with "hacker" style mods ?

 

I did to my Supra with $2 mod.... rubber caps on the VSV. (see VSV mod on mkiv.com)

 

Well Tony, that's why I'm asking before I start tearing into things and mixing vacum lines . However, you have to agree that reprogramming the flash is also a hack, just a more advanced one. Also, in one previous post I've read that not all tuners, use the same algorythyms and measures to control the boost as the stock tune, so would deviating from stock style programming be considered a hackjob of a flash if it gets the job done safely?

From what I've seen so far, I like the idea of a simplicity of a flash, however the cost seems a bit steep if I'm not doing any extensive mods up front.

 

From my experience with other cars that run MBCs on stock ECUs vs. a Flash/Chip the car runs much, much smoother with the flash/chip. With MBCs you get virtually no part throttle and boost is either on or off. Wouldn't you want to spend a little extra $ and have the car drive just as smooth as stock but wtih added power? (and in some cases quicker throttle response?)

 

Tony is right, and I have spoken to him on the phone a couple of times.

My major concern would be a momentary (No matter how momentary) LEAN condition while the ECU/DME is contemplating a shutdown. The Boost has to occur for "X" amount of time before the ECM can register it. Then if it is the same as other cars, I have worked with, simply shuts down the injectors. Making it even leaner for another fraction of a sec.

A lean condition in a NA car causes enough havoc, you are working with fractions of a second here. Piston blowage or meltdown is a lot more expensive than an overpriced Flash.

I have gone the MBC route before and I think unless you are radical, an ECU flash is the way to go. The boost is more graduated that way I think. If boost controller monitored fuel thoughput and Air Fuel Ratios, it would be different.

However, I do agree the cost of a Porsche Flash is diabolical. I used to write code maps for the Lotus S4 and charged only $295 - $395 for the plug in chip. I am to old to do that anymore, so I guest I will have to put up with the shafting costs on this one. I like the way people/vendors "assume" just becuase one has a nice car that one is made of money. Certainly not the case in most situations.

Anyhow I will do it myself where I can, and pay for what I cannot be bothered to do. I am working on trick wastegate actuators at the moment and I think I have a brilliant solution. My "S" Car will end up being the "mule", but that is always the way.

I wish there was a DIY section on this forum. (Moderator where are you?)

SWR

 

Try this?


https://www.6speedonline.com/forums/tech-how-32/

 

Thanks....

SWr