Mates bought an Audi A3 the 180bhp 1.8t version. Gonna get it remapped with Revo software to take it to about 210bhp something like that..... anywayz.....is it possible to have a dump valve put on? ive heard it makes no difference to the engine or power just gives you the noise? (maybe one for rich git this??) anything else decent to do to the engine? Is there an induction kit like rich has???? how much are they? any help greatfully received.....think the first mod is to get some smoked side repeaters! Rich
Might be wrong, but dump to atmosphere valves can mess up the fuelling a bit. Engine management meters in an amount of air that then gets dumped out without it knowing, hence overfuelling for a bit!
hmmm so not good then? What about Vag.COM? will that work with audis? Is it possible to get the cable and the same software as we all use?
Three options really... Uprated, Uprated with CIA, B.O.V. One without a lot of noise but does the job is to replace the original DV with an uprated metal piston type DV > here Another option with a bit more noise is to fit an uprated DV (as above) along with a CAI (Cold Air Intake) names like Evo and Carbonio etc. (Right Click Save-As > Sample (Evo CAI with Viper DV)) And finally a proper B.O.V. I think the one to use is the Bailey DV26 with the fitting kit that allows you to put it next to the throttle body, due to the location, it shouldn't muck up your ECU > as seen in this thread
Wow nice one dude. and do they have any benefits....just presumably wanted to have a nice noise at the right time if you know what i mean!
basically you have a MAF (mass air flow) sensor between your turbo and air filter, this measures the amount of air entering the induction system. Im sure you know a dump valve vents charge when off throttle, this is air that has been accounted for by the MAF that you have vented. This venting throws the ecu's calculations off, leading to a laggy engine and loss in power. A recirc valve puts the air back into the system just after the MAF, so all the accounted for air stays in the induction system. Richgit can run a atmos DV as he doesnt have MAF as his DTA ecu uses MAP and TPS sensors. Friend of mine had his car jabba chipped to 202bhp and it went well, he dropped a bailey DV on the car and it killed the car. Slow, laggy and cack to drive. Took it to bailey and they fitted a stiffer spring, it was a touch better but hardly opened. He swapped it for a forge 007 recirc and it was back to its former glory. If you want it to whoooooshhhh get an induction kit as the recirc will chime out. Edited by: Rallye
Induction kit, best to keep away, tend to feck up your MAF sensor if you are running standard ECU. Dump to atmosphere DVs not considered a good idea on 1.8Ts, recirc much better, but some makes inc the forge ones ued to be pretty crap, dunno if they have improved the design now tho.
Intereting, thanks Tim and the others... soooo basically not a good idea for DV's unless they are recirculating ones....do these make the WOOSHHH noise? the induction kits are not good either???? arghh Cheers guys! Rich
Pretty much just a noise benefit, though it improves throttle response slightly. The Forge piston type DV's need to be regularly serviced (once a month) so that they dont start sticking. Another option which doesn't produce a lot of sound is to simply fit a DV off a TT as it has a stronger diaphragm. For VAG.COM, see Ross-Tech for more info.
the induction kits thing is a interesting one, i agree mesh and foam filters are cack. But how is a cotton cone different to a flat panel? same thing different shape. saying that u dont see the VWM engines running a cone filter. Maybe look into a BMC box
cheers for rosstech info. so the audi's are covered under VAG.com, i thought they were. could just get a connection off ebay (lead) and then get the software off someone on here? would that work?? Rich
is the 180 a VWM code then??? This is getting complicated now i tell thee!!! I look at richgits and he has a cone one on it....or cylindrical one.....but looks like an induction kit not just a replacement filter...
VAG-com to just use for when things go wrong and stuff....check out diag codes and stuff....... mate is a mechanic too so he would use it to check stuff presumably... also just interested to see if it is the same to use as VW's
I have a Turbo Dynamics twin piston recirc DV on my golf and even with the standard airbox you can still hear is chuffing back through! With a cone filter it's a bit louder too! Go Fast Bits These guys do a DV that dumps 50% and recircs the other 50% supposedly enough air to keep your 1.8T running correctly and enough to give you an audible "whoosh" No idea if it's any good or not though! Alan
