or get an AHU and add a decent FMIC, more fuel, more boost and get even more power again, for probably very little drop in economy
BUT the 1.9idi is basically 1 wire to run engine.VS The sensor-laden electronic TDII've had both, love the simplicity of the iDI, but have found the ahu with 205 nozzles tdi to have more power - as I ignore the CHECK ENGINE light as accelerating...Although I lean to the simplicity of the IDI
the ahu is better
more power and torque
andbeter for economy of fuel
libby you have very valid points and i'm agreeing with all, but surely an AAZ will never make as much as an AHU? I'm hoping to see 150 at the wheels with mine, and I don't know of an AAZ's that'll do that
Again i guess it just comes down to easier and cheaper to install VS potentially (and stock-ly) faster and more economical.Got to say i'd never heard of this cup-dropping thing over here, maybe the engines over there were worse built/designed than over here
Quote from: golftd412000 on June 04, 2012, 03:52:38 amthe ahu is better That's true, it is better because it is a more efficient engine.Quote from: golftd412000 on June 04, 2012, 03:52:38 ammore power and torque [cough]bull$hit[/cough]Quote from: golftd412000 on June 04, 2012, 03:52:38 amandbeter for economy of fuelYup.Quote from: Henk on June 04, 2012, 04:07:51 amlibby you have very valid points and i'm agreeing with all, but surely an AAZ will never make as much as an AHU? I'm hoping to see 150 at the wheels with mine, and I don't know of an AAZ's that'll do thatNope. If the AAZ had been fitted with intercooler and with appropriate boost fuel enrichment like the AHU was, then it would have made the same power as the AHU. I have seen dyno sheets for the 1.6TD with over 200hp. 150hp at the wheels with an AAZ would be relatively easy (for some/me) to achieve. The AAZ will consume 10-15% more fuel for that power with the accompanying added emissions and there is an massively increased load on the cooling system because that 10-15% of extra waste heat ends up there, but that's it. Actually as Trev was saying, probably on an ALL-OUT performance build, the AAZ would slightly outdo the AHU because it will produce that same power/torque at a 10-15% higher rpm and so at the point where the bottom end is the limiting factor, the AAZ will survive slightly longer just because of the added revs.QuoteAgain i guess it just comes down to easier and cheaper to install VS potentially (and stock-ly) faster and more economical.Got to say i'd never heard of this cup-dropping thing over here, maybe the engines over there were worse built/designed than over hereNope. It really just comes down to long-term fuel economy and taller gearing vs shorter gearing and less initial cost/labor. The pre-chamber thing is minimal (unless it happens to you). Even on maxed out engines it probably happens less than 2% of the time. The cost of a new engine 2% of the time still does not offset the added work for an eTDI or the added cost of a properly built mTDI pump.Don't get me wrong, I'm not a proponent for the AAZ over the AHU or vice versa. They are both fine and depending on one's priorities either can be the better choice. I just have a low tolerance for nonsense and the comparison of the stock hp/tq of the two engines is nonsense. They were fitted with different engine management and external performance parts and those differences account ENTIRELY for the difference in performance. Fit an AAZ with the appropriate fuel, an intercooler and 15% shorter gearing and you won't be able to tell the performance difference with an AHU until you get to the pump and fill it with fuel. Like I said, I'll probably run both in different vehicles and both would be the right choice in their particular application.
Quote from: homerj1 on June 03, 2012, 03:19:30 pmBUT the 1.9idi is basically 1 wire to run engine.VS The sensor-laden electronic TDII've had both, love the simplicity of the iDI, but have found the ahu with 205 nozzles tdi to have more power - as I ignore the CHECK ENGINE light as accelerating...Although I lean to the simplicity of the IDI I have a 1 wire Vw oem ahu TDI in my car right now, .
Quote from: 8v-of-fury on June 03, 2012, 06:41:50 pmI have a 1 wire Vw oem ahu TDI in my car right now, . its made with OEM pieces.. but its FAR from OEM..
I have a 1 wire Vw oem ahu TDI in my car right now, .
and also the difference in gearing since any tdi came with an 02a or 02j, and all idis had 020 or 010.