Throttle response from 3K! Ouch!

[jaykay]

Could be...it's old but there is no code...just had an emissions check and they now read the ECU

It's more of a bog ...like you are in the wrong gear rather than a stutter or hesitation

[Heiko]

Jay, your car is not slow... it just seems to have some bog in mid range...
When you put the bigger intake pipe in did you move the MAF? Also did you try the other map? We'll have a look next time you come over when we have more time:-)

[jaykay]

H...

The MAF has never been touched or even.... breathed on wrong! I averted my eyes when working close to it!

[Heiko]

If everything is working as is my guess would be the predefined map. With the custom exhaust and modified air intake your only bet to get it right would be for someone to create a custom map on a dyno. Hard to justify the cost though.... At least in my opinion, especially if you don't track it anymore.
Your car is absolutely mint and looks and sounds great...
Heiko

[Bigsmoothlee]

Oh
My
God.

Are we really trying to reinvent the wheel here? Bigger pipes, different maps...

how about you borrow your friends air flow meter insert and see how it goes?

[Nine8Six]

Originally Posted by Bigsmoothlee

Oh
My
God.

Are we really trying to reinvent the wheel here? Bigger pipes, different maps...

There are days when I would love to go back to the mini 1" stock headers, restricted cat converters, the excessive back pressurized maze-designed exhaust system. Not forgetting putting back the stock map tuned for retarded ignition and low grade petrol AF curves - and of course putting back all the emission restrictions that the manufacturer hides in the oem mapping. What else... oh yes, almost forgot to put back the motorcycle size TB back in there!

Not reinventing the wheel. Just making ourselves a Porsche car (instead of a DOT restricted vehicle).

My wife used to like the car before... she hates it now To each their own!

[Bigsmoothlee]

Originally Posted by Nine8Six

There are days when I would love to go back to the mini 1" stock headers, restricted cat converters, the excessive back pressurized maze-designed exhaust system. Not forgetting putting back the stock map tuned for retarded ignition and low grade petrol AF curves - and of course putting back all the emission restrictions that the manufacturer hides in the oem mapping. What else... oh yes, almost forgot to put back the motorcycle size TB back in there!

Not reinventing the wheel. Just making ourselves a Porsche car (instead of a DOT restricted vehicle).

My wife used to like the car before... she hates it now To each their own!

I am all for it. My boxster has a 996 3.4 engine, headers, a full exhaust....I love making a porsche drive like a real porsche.

What I am against is using tuning the ecu as a bandaid to fix an existing problem. Hesitation on a stock engine is a fuel metering or vacuum issue, and needs to be resolved before any further modifications...and most likely the air flow meter

[jaykay]

Originally Posted by Heiko

If everything is working as is my guess would be the predefined map. With the custom exhaust and modified air intake your only bet to get it right would be for someone to create a custom map on a dyno. Hard to justify the cost though.... At least in my opinion, especially if you don't track it anymore.
Your car is absolutely mint and looks and sounds great...
Heiko

Yes I doubt I would custom map it. Don't need to pull past on the back straight at CTMP at present...not driving at all

It may that the stock map has more adaptation capability than the one I currently have loaded. I have heard the comment that the stock is really pretty good with coping with changes...

My modified one may be optimized for the stock S TB which is 68mm

Oh yes thanks! Glad you like the sound!