Check out the thread regarding the vacuum gain system (VGS). No more yo-yo. Plus wicked fast bypass valve response. It is also smoother. Maybe it's what you are looking for...

 

+1 on the vgs....i just did it this week..the reasoning and theory seemed sound to me, and the price was sure right...Def made a difference that was positive....also just got the DT bypass valve on my bench...heard some like the combo of the two and some dont...Guess ill find out

seemed to eliminate all the off idle wierdness in my car when im not driving it like i hate it haha

 

Is this the thread you're talking about?
https://www.northamericanmotoring.co...ystem-vgs.html

I just skimmed it on my phone but it looks interesting and worthwhile. Maybe I should do that and replace my BPV spring when I install the smaller supercharger pulley that I just ordered. Try to cover as many bases as possible before shelling out the cash for the SprintBooster, which I will probably end up buying anyway, down the road.

 

ive gone down the mild mod path..15 pulley, cai, exhaust etc and i will be surprised if , after the vgsand/or the bpv spring ( however you take that approach) that you will still see a need for the sprint booster..i know my results at this point have me satisfied

 

It would certainly be nice not to have to bother. That's $350 bucks I don't really want to spend.

I am not planning on doing much to the car. Here's my list:

-- New BPV (BOV?) spring and VGS fix
-- 17% smaller S/C pulley
-- CAI (whatever name-brand system I can get a good deal on)
-- Tune
-- 1.5" drop springs on stock shocks
-- 19mm rear sway bar

And some sweet, sweet preventative maintenance...

 

With the tune there is no need for that $350.00 Sprint Booster. Your tuner can tweak the throttle/requested torque maps and achieve the same goal. IMHO, Save the $350, add another $100 and get a good custom or remote tune.

 

That is exactly what I wanted to hear.

Btw, can anyone point me towards a link for this bov spring? I can't find what people are talking about -- all I know is that by getting a better one you can make sure you're always getting proper boost.

 

BOV is on a gen2
bypass valve is on gen1.
the oem valve, sold with a reworked spring is sold by detrot tuned
the oem, starting in (i think) 2005 had a slightly stronger spring...
if you want to find you own spring...go for it...buy a new valve...test it...measure it..buy some other ones...test them...find the right one...and then you can start to sell it....opps...chad with detroit tuned did just that....an accomplished mechanic with years experience ...the spring is not the only part that fails...it has a vacume diafram...and a valve itself may fail to seal....so just swapping tge spring to a stronger one may not work...

 

Thanks, Zippy. I was confused about that and my previous experience is with turbos, so I couldn't for the life of me figure out what BPV stood for.

I'll check out Detroit Tuned, thanks.

 

+1 on the detroit tuned bypass valve! Chad miller is a great guy to deal with give him a call, you will also need a new I/C outlet to intake manifold gasket, most dealers have them in stock.

 

Oh geez. Every time I turn around there's something new I need to buy... but thanks for all the help and advice.

 

To stay on track of the OP's original question.....

It 100% does change things and you contradicted your statement by saying so yourself! It does so by way of speeding up the throttle signal to the ECU. Anyone who claims different either already has a more expensive solution (a tune) or doesn't have a throttle controller yet. Pushing the pedal down faster or sooner is nothing more than adaptability to a poorly designed system. Drive your MCS that way and then go drive a cable throttled MKII VW. You'll be both slipping the clutch and slipping the tires like a stickshift newb after acclimating to making up for the extreme DBW lag in the MCS.

Listen to this guy!

See also: D1 Spec throttle controller. WAY less money than Sprintbooster and way more adjustability. You can find them on A&J racing under the mini section. Simple install and immediate change in throttle response will be noted. I bought one and it will be staying on the car until I grenade it or sell it, whichever comes first.

Just to remind the newbs and skeptics: It's not a power adder. It's just a simple solution to the laggy DBW throttle in the MCS that can also be adjusted (and sometimes eliminated) with a more expensive solution like custom maps and tuning by knowledgeable tuners. While a tune will smooth out all your changes and supporting mods, the throttle controllers like Sprintbooster and D1 Spec will serve as a less expensive throttle delay eliminator until if/when you see fit for a tune.

 

Just wanted to follow up on this....

Who else is using the D1 throttle controller? What setting(s) are you running and how easy is it to adjust?

Aside from price and adjustability I assume it's functionally the same as the SB. Has anyone tried both and had a preference?

 

Still interested in responses to the above post, but found a good bit of information here:

https://www.northamericanmotoring.co...-question.html

The "permanent" OBD connection might be an issue for me since I just received a ScanGauge....

 

I would also be interested in learning more about this. Anyone? Anyone? Bueller?

 

i currently have sprint booster but i might look into trying that in the spring

 

The flywheel will help but regardless of what upgrade you put in your car, you will need to upgrade your ECU before you can improve your throttle response. The problem with fly by wire is that the computer takes a snapshot of the peddle position every .?? seconds. When you upgrade your ECU it will increase the sampling rate. I.E. MTH ECU Software will do this for you. I'm sure the other ECU software upgrades do the same thing like Shark injector, Evotech, Unichip. You can also go to a performance mechanic and have them put your car on a Dyno and they can custom program your ECU to your car for maximum performance. The MTH ECU is probably the cheapest solution.

 

Sprint Booster, Sprint Booster, Sprint Booster