I did a quick search about throttle response on the forum. To my surprise there's almost nothing except for a few mentions of sprint booster or people discussing turbo lag/engine power curve issues, which is obviously not what throttle response is. The throttle response is the time between you press the pedal and the car actually starts to respond and rev up. I daily drive my 996tt so I've gotten used to it. But today I had to drive my 2012 Chevrolet Spark (yes, don't laugh) for the first time since winter and I was astonished of how much faster that piece of crap pack of juice engine responds to the throttle. There's almost no delay when pressing the gas pedal.

I got home quickly and took out the Turbo for a drive. The delay is so huge, it's almost unbearable. It is most noticeable if you tap the gas the pedal gently. I tried to recreate the delay by tapping it into a metronome at home. If I were to guess the numbers, I'd say there's a good 350ms of delay between pressing the gas pedal and the engine responding!

My understanding: that's the way the first drive-by-wire systems worked. If so, what are the solutions to shorten this delay? Does flashing the ECU help? My car was flashed by a German tuner back in 2002. Maybe there lies the problem.. What current tuners address this issue in their tunes? Or do I need a standalone ECU to resolve it finally?

 

this little gizmo https://www.sprintbooster.com/ actually helps to quicken the dbw throttle response. but its "gimmicky".

i used it for awhile and just saw it in a box in my garage the other day, and almost forgot what it was lol

 

get a newer tune...

If youre complaining about a .35s response time youre going to be spending ****loads of cash for that throttle response lag reduction.

 

you can't be serious. Sorry I ain't buying (pun intended).

 

I asked for specifics. Mainly, can the pedal lag be eliminated via stock ECU reflash, or do I need a standalone.

A third/half of a second is eternity. Imagine if you computer mouse or guitar had the same delay.

 

I totally get your issue. I thought the same when I bought my TT. The Porsche throttle response is a curve (50% pedal get you 25% power) - I like a straight line. I told the tuner (Softronic tune) to make it happen. It responds perfectly now. Just get a tune and tell the tuner what you are after.

 

Theres a newer stock tune that helped with throttle response after 2001.

You cant fully eliminate the lag unless newer components are used. It might not even be throttle input lag that youre experiencing as the only lag i notice is the fact that stock flywheels are heavy theres a huge amount of piping that air has to go through. Try blipping the throttle during a true cold start, youll notice it has a slightly better throttle response as its running rich and at slightly higher rpms. I had a c5z and it had throttle response was instant as it literally had no airflow restrictions like journal bearing turbos, intercoolers or a huge amount of intake piping. If you want close to instant throttle response, fenderwell/ cone your turbos get bb turbos, lwfw and a tune to match your setup.

Start with a tune and a hiflow/catless muffled exhaust and see how that feels.

Imo 350ms is manageable.

Ps, fix any boost leaks you might find.

 

Actually have you tried the throttle adaptation?

https://www.6speedonline.com/forums/...tle-reset.html

Works the same way. Door open ignition turned to on wait 2 minutes dont touch throttle turn off for 10 seconds then good to go. Do this when the car is cold preferrably before first start.

 

i completely understand. but it does mitigate somewhat the issue you outlined.

it "works" its just cheesy and "tricks" the dbw is all. but throttle response with it plugged in is noticeably "quicker". it's a simple on/off feature.

but, yeah. mines sitting in a small plastic bag. i think i paid 50 bucks for it as a lark, years ago.