Chekm8

it just seems like the baileys dv is more funner. i mean i blip and i get instant boost. i get to 100mph+ really quick. reason i got the apr dv was because i was trying to put the firmer spring to replace the original baileys dv spring. shop said the o-ring was a bit larger but they can put it together and i can try it as is...i figued well, f it. i want something that's solid so lets throw in the apr dv since they had it in stock. i was hoping to get the baileys response but tighter-- it wasn't. i mean it feals tigher and anything above 0--or to the right where the psi was, i'd get boost and some power.

when the baileys was on, i'd get like -10 or 10 hg and i'd get power from the k04 all the way till 15-20psi and it would keep kicking. it got to a point where i'd just blip the gas and i'm at 100mph+ aleady and i'd back off. it also felt like i'd rev slightly, get boost and i can get to 100mph+ quick.

with the apr, i have to be like 10+psi to get boost and seriously, it takes a loooooooooong while to get to 100+. i litterally can blip the gas and hit the floor and hear the click of the pedal hitting teh floor to finally get boost and some power, but it didn't compare to the baileys.

i guess it's easier if i take a pic tomorrow and show you guys which way this thing is pointing. i'll try to flip it just for the hell of it. if it's the same, i'd rather take the the baileys where it was at with the 'larger o-ring' as long as i get the power/boost when i blip.

bottom line, at this point, the baileys was waaaay funner to drive. it was instant boost, instant kick, instant power. with the apr, it was back to k04 style where you jam on the gas pedal and it hits the floor making the clicking sound and then a few seconds later, boost comes up with power kicking.

hope the weather is good tomorrow. i'm going to flip the apr and see if i get different results. if it's the same then i'd have to just knock the apr dv down vs the baileys.

i'll update you guys as well as pictures...tx for all the feedback

Chekm8

had apr stage 1 originally with my exhaust.

got the k04, injectors, tip, k04 software for about a month with the baileys with the stock springs.

i had the new blue or yellow springs to replace the baileys and this was when the shop found out the o-ring was a little larger--supposedly giving me 'performance issues'. to be honest, the only performance issue i had was the bolts backing out. when i tightened the bolts with all the above items, i loved it. i mean seriusly, it felt just like my k03 with apr stage 1 with 106+ octaine and 100+ software running in my car.

i'll take pics and see what happens when i flip it. as mentioned below, the baileys was much funner than the apr r1 dv because boost can come with just a simple 'blip' or rev of the engine. it got to the point where i'd be hitting 110mph+ on the freeway really fast. just seems like the apr dv takes a while to get to 100mph...

to be honest, i havne't taking it past 100mph with the apr...no room, traffic, and rainy at the moment.

we'll see...

Chekm8

was pointing to so i guess i'll try flipping and see it makes a diff. if it doesn't, then i'm going back to my baileys and change the o-ring if that was the only issue.

i mean hell. the baileys dv as is was fun as hell and had kick at any point. i can go 65mph, blip the gas and boost/power really qick to 75mph, and keep doing it till i get to 100mph. it was THAT simple and quick to get to 100mph. apr feels like my stock k03 to be honest--slam on the gas, boost crawls past 10 hg, 5 hg, 0 hg, 10 psi, 15 psi and boom boost...15 psi, still bossting and climbing but really quick to get to 15psi, and then at about 17-19psi, feel like power is starting to loose itself...

anyway, will see how it goes tomorrow if i flip it or throw the baileys back on. tx guys!

Matt Devo

that sounds like a boost leak to me

diagnosticator1

The diaphragm style R1 DV is a better, quicker reacting design compared to the Bailey DV, and does not need any maintainence.

diagnosticator1

with the R1 installed normal or reversed. However, it will operate better installed so that the boost pressure flows into the valve only on the center bottom port, instead of into the valve at the side port. With the valve OPEN, the air flow should be from the center bottom port to the side port outlet. The DV side port should be connected to the TIP. The more I think about the symptoms you described, I think that maybe the R1 spring is too light, and the next stiffer spring should be tried for comparison.

Chekm8

I'm guessing it's in the right direction and that the R1 spring is not strong enough. The other wierd fart is that i sometimes hear a faint 'fart' sound i guess when pressure is being 'released' or 'building' through the diaphram? in any case, there's this farting sound once in a while.

I'm going to reverse the R1 DV and see what it does and as a last resort, go back to my Baileys or maybe change the spring on the R1.

btw, picked up ECS Forge DV springs, any1 remember what the order was as far as boost strenght? was it yellow, blue, red and what was the boost rating?

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diagnosticator1

may be directly caused by the reversed boost flow connections. It's important to understand that the diaphragm is held in the closed postiton by the spring pressure,and the boost pressure on the spring side of the diaphragm added together, opposed by the boost pressure acting on the much smaller diaphragm area of the closed center port, and opened by applied vacuum on the spring side of the diaphragm, and the unbalanced boost pressure normally applied at the center bottom port. The vacuum hose applies boost pressure to hold the dv closed and because the two areas the boost is active against, plus the spring adds to the closing force from the pressure on the spring side of the diaphragm. With the DV reversed, the boost is applied to both sides of the diaphragm, with only the spring tension force active to hold the valve closed. This is a simplified explanation, but accuratly shows the relationships of the pressure forces inside the DV. The existing spring in the R1 will be stiff enough with the DV installed in he correct direction, and I predict that the complaint you have with the R1 DV will be resolved by reinstalling the DV in the correct postition.

Chekm8

blip the gas and needle/boost jumps and power/boost kicks in! i can get to 100mph fairly quick now!

when it was reversed and i slam on the gas--literally making it click when it hits the floor, the car would feel like it had the k03 in it and some lag time for the boost and power to kick in. also no more mini 'farting'/'squeeking' noise at any boost.

btw, who knows where to get spring and o-ring replacements for the baileys? can't seem to find any on the regular audi tuner shops.

thanks all for the input!

Tgr_Clw

APR's instructions explicitly state that the R1 must be installed in the "normal" orientation.