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There must be some space in your car somewhere I suppose.
Y'know, not many people know this... but an in car PC will NOT fit in the glovebox of an S2 with air con, not even in component form using laptop components and even after you have taken a hacksaw and a mig welder to said glovebox:-)
I ddint realise you could get the boost in lower gears. Thats the bit that hacks me off about the Motronic setup. For example my car has ~480bhp, but in 1st, 2nd and 3rd, boost does hit its peak IIRC? so for doing 1/4 miles etc this might mean that i would have full boost in every gear and notjust in 4th and 5th. Not very gearbox/clutch freindly, but sounds interesting all the same.
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Tom C - www.rcmr.co.uk
Audi UR Quattro
Audi 100 C3 2.0 5 cyl 115ps
Audi S2 - 07k engine project aiming for 800ps
Audi B5 RS4 645ps 911nm
No disrespect to many people Andy, but it is nice to see that there are some who actually understand the principles. Just approaching this from the numbers angle... There are prolly (i am guessing here) about 120 S2's in the UK that are "tuned", there may be more, there may be less, but not by much. There are HOW MANY Japanese turbo cars that are tuned? Thousands, hundreds of thousands? Who knows (not the insurance companies, that's for sure). There are FIVE different manufacturers, mainstream, of boost controllers. There are at least three people on this forum who are going to tell them all they got it all wrong.... Nah!
graham.
Surely this phenomenon of Japanese boost controllers is all about making money with a bit of kit that can be fitted to any turbocharged car and fiddled with to the drivers delight. Its bound to be popular as more boost is what these people desire. Its just much more simple for them to fit this device than try to reprogram the ECU by themselves. From that point of view it is a wonderful engine for the new generation of car 'tuners'. In days of old they used to mess around with distributor bobweights, or try umpteen carburettor jets in the quest for some more poke. Nowadays - the Maxy P generation just need to get Greddied up with an off the shelf tuning device that will make their car faster and impress their bezzy mates.
As we all know there's lots of rubbish 'tuners' who charge lots of money for not always impressive work (on Audi's, Subarus or whatever) - truth is these boost controllers are a good option to some folk.
I just prefer Motronic is all - cos of the fact its a properly integrated system with lots of failsafe mechanisms. Oh and did I say that you can't adjust timing or injector pulse width using a boost controller?
The day I have a Japanese boost controller fitted to my car you can give me a dry bumming with a lambda probe.
Each to their own - love, peace, whatever etc etc ! Life is too short...
The Motronic system has integrated knock control which retards timing and boost should there be excessive knocking. With a boost controller, timing will still be retarded but boost control is lost. There is a higher risk of detonation and should be listened for or should be monitored by a knock meter. The motronic system is normally flexible enough to handle some extra boost without fuelling issues. I had previously ran +4 to 6 psi of additional boost on various cars using just a boost controller and the A/F ratio checked by a wideband meter wasn't any different from the stock setup. The problem is until you hit fuel cut, the safety limit of boost increase, which is a feature commonly deleted from aftermarket chips. Timing and fuelling cannot be adjusted by a boost controller alone and that is agreed, however the question is whether they do need adjusting. Without that much mods to the car, they probably don't and thats why most aftermarket chip companies just use the same stock base map with different fuelling and boost at WOT. The argument for chips vs boost controller will be endless. It really depends on what you expect and has planned for your car. If you don't plan to do much mods, then a set of chips would probably be easier and more cost-effective. However, if you plan is for example to upgrade your turbo, then just a set of chips won't do. In that case, one would probably go for a boost controller, sub-com (piggyback units like e-manage) before resorting to a complete stand alone system.
I have a 3071 from 034 installed on my RS2 spec S2. I also have much bigger injectors and a higher rated fuel pump.
I dont have the luxury of MRC being near or any help from Mihnea as he did for me when I ran stock RS2 spec.
So this brings me to the question of a boost controller and an after market piggie back fuel and ignition controller.
What do you guys think of the HKS EVC IV ?( I know sacralegious finniky jap stuff on an Audi)
The Red Baron
(R)S2 spec, 034 GT3071
Wagner Short Intake and Intercooler
Whiteline, Custom Shocks with external reservoirs
8pot calipers with A8 discs
Vems
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