AWE Stg3 boost

[Evilevo]

I bought my car used with AWE stg 3 on it, it has fueling and AWE SMICs among other mods. I see all the posts of OTS kits running like 22-23 Psi. My car is only running 18psi. Is there a way i can turn the boost up with the N75K valve that i have on the car? Or do i have to put a MBC on the car? If i have to put a MBC on, can i just go ahead and turn it up or do i have to mess with Lemmiwinks at all?

Thanks all

-Adam

[S4evr]

with my awe ots kit, i have been running the vast mbc and tdc. up to 23-24psi, no lemmi and its all good

[Evilevo]

I know this is stupid, but what is the tdc and what do u need it for?

[JDM EJ1 95]

Its actually TCD

throttle cut defender


when the ecu sees a certain amount of boost (over limit) itll cut throttle.. this stops that from happening


my AWE OTS kit boosts 23 spike then tapers to 21.

no MBC or anything else

[Evilevo]

where do you get a TCD from?
Any clue as to why my car runs so little boost compared to other OTS AWE kits?

[OldYella]

where do you get a TCD from?
Any clue as to why my car runs so little boost compared to other OTS AWE kits?

Probably for longevity reasons.

[Tallbino]

where do you get a TCD from?
Any clue as to why my car runs so little boost compared to other OTS AWE kits?

Hey man, don't sweat the 18-19 pounds. My AWE stage 3 was the same before i installed the mbc and tcd. I've heard from other people that they are seeing the same thing.

[Aphex350]

It's probably just a leak. Definitely don't install an MBC until you pressure test

[Evilevo]

do you need the TCD to run 20-21 psi? I'm gonna pressure test it next week. Hopefully there are no leaks

[AudiSportB5S4]

it sounds like theres something going on.... you are in maryland so im guessing right around sea level yeah? 18PSI is more along the lines of K03 numbers. i also vote boost leak

[Evilevo]

yea, pretty much right around sea level. Dont get me wrong, the car still moves. I ran my buddy who is APR stage 3 and we were like dead even. Him running 20 psi me at 18. The car holds boost fine, I just replaced the TBB. I'll pressure check it next week. Can I run a hallman pro MBC, or is there anyway I can control boost with the N75K valve I have?
-Adam

[The_Jerbel]

Nobody sells the TCD anymore, but I happen to have 1 VAST fully adjustable TCD left over in stock if anybody wants it...

[Evilevo]

my real question is, how much boost can I run before the ECU cuts throttle?
why does no one sell the TCD anymore?

[The_Jerbel]

It depends on what altitude you're at. The Requested and actual boost can't differ by more than 4psi IIRC before you get TC.

They don't sell them anymore because instead of helping people jimmy-rig their current setups written by other tuners, they would rather sell you their tune (which runs beautifully) instead.

[Evilevo]

I'll log it tomorrow on my way home from PA, what blocks should I log?

[The_Jerbel]

119

[Evilevo]

I logged block 119, but that only showed actual boost in mBar and not requested boost.

I know this is stupid, but how should i post the logs that i take?

[The_Jerbel]

Log block 115 as well.

Make a graph in excel using the info that you logged. Then email me the excel file or post it as a pic.

[Evilevo]

Engine Speed Engine Load Boost Pressure Boost Pressure
TIME (G28) (specified) (actual)
STAMP /min % mbar mbar
85.7 2320 69.9 1010 1150
86 2360 69.2 1010 1210
86.31 2440 83.5 2290 1250
86.61 2480 109.8 2140 1370
86.91 2600 113.5 2130 1500
87.21 2680 127.8 2130 1650
87.51 2840 136.1 2160 1810
87.81 2960 154.1 2200 1960
88.12 3120 159.4 2220 2080
88.42 3240 165.4 2230 2120
88.72 3400 163.2 2230 2120
89.03 3520 164.7 2240 2120
89.32 3680 165.4 2250 2120
89.64 3800 167.7 2260 2120
89.94 3960 158.6 2290 2150
90.23 4080 156.4 2300 2110
90.55 4240 156.4 2290 2120
90.86 4360 154.1 2290 2120
91.18 4480 151.1 2280 2110
91.5 4640 148.9 2280 2130
91.81 4760 151.1 2280 2100
92.15 4920 154.9 2280 2120
92.48 5080 150.4 2290 2120
92.82 5240 150.4 2310 2110
93.17 5360 146.6 2330 2100
93.52 5520 147.4 2340 2090
93.87 5680 144.4 2360 2090
94.23 5840 149.6 2370 2090
94.59 6000 142.1 2380 2090
94.96 6160 144.4 2380 2090
95.34 6280 139.8 2390 2060
95.72 6440 138.3 2390 2080
96.09 6600 136.1 2400 2070
96.47 6200 16.5 1010 1650



Can you pull a FATS time from this also?

[Evilevo]

I have a graph, i just cant figure out how to save it as a picture

[MikeS]

CTRL+Print Screen and paste it into MS Paint or another like program

[The_Jerbel]

Do a boost leak test on your car.

[Evilevo]

I had Induktion Smoke test and pressure test the car. There NO leaks anywhere. They also tested the wastegate lines to make sure they werent leaking. No problems there either. Still cant figure out why it isnt making the requested boost.

I logged it again and this time it was making 22psi but it was requesting almost 24psi.

idk if the tune in the car just sucks or something else is wrong.

[The_Jerbel]

The first thing I would do at this point is swap out that N75k for an OEM N75 valve.

[Evilevo]

Would that be a N75B?

[Evilevo]

I swapped to the N75B valve that i had. Retested.

Here are the logs

Engine Speed Engine Load Boost Pressure Boost Pressure
TIME (G28) (specified) (actual)
STAMP /min % mbar mbar
0.02 2200 12.8 1000 1030
0.29 2200 9 1000 1030
0.6 2280 31.6 1000 1010
0.91 2320 67.7 2310 1050
1.2 2400 77.4 2360 1120
1.5 2480 91 2380 1230
1.8 2600 103 2310 1360
2.11 2720 115 2280 1510
2.41 2880 128.6 2280 1700
2.71 3040 147.4 2330 1940
3.01 3240 156.4 2330 2070
3.31 3400 157.1 2320 2070
3.61 3560 158.6 2320 2070
3.92 3760 160.2 2320 2100
4.23 3920 164.7 2340 2150
4.53 4120 163.2 2350 2210
4.84 4280 166.9 2340 2290
5.15 4480 169.2 2330 2320
5.47 4680 167.7 2320 2380
5.8 4880 169.2 2320 2370
6.14 5080 166.9 2320 2330
6.48 5280 160.9 2350 2330
6.83 5480 162.4 2380 2320
7.18 5640 163.2 2400 2370
7.54 5840 165.4 2420 2400
7.91 6040 164.7 2420 2400
8.28 6200 161.7 2430 2390
8.66 6400 155.6 2410 2400
9.03 6560 157.9 2420 2430
9.41 6720 151.9 2430 2420
9.78 6320 26.3 1000 1850
10.13 5320 91 2390 1280
10.48 5400 169.2 2410 2350
10.82 5480 189.5 2420 2540
11.18 5600 184.2 2440 2540
11.53 5720 181.2 2440 2540
11.89 5840 179.7 2450 2540
12.26 5920 177.4 2460 2540
12.63 6280 112 1000 2540
12.97 5320 12.8 1000 1430


I dont know if i trust it running higher than specified. let me know what you think. For now i left the B valve in and am just running the car on the stock map

[AudiSportB5S4]

It looks like the stock N75 is doing a better job than that K. I'm looking @ this from my phone but it seems that your req and act seem to be more on par. How is the condition of the intercoolers? Sometimes they can leak if they have rock nicks etc. If you want to log 115 that's also boost. Never used 119 for boost b4 but I'm sure jordan knows what he's sayin!

[AudiSportB5S4]

Not sure if you know this but the variation in req vs act towards the beginning and end of being on the throttle is just the diverter valves doing their thing. That's why your last few numbers are so off.

[Evilevo]

That log is block 115. Yes, it seems that the stock B valve is doing a better job than my K valve. The only problem with the B valve is that in the car if feels like the car is dead below 4k and than kicks REAL hard after 4k and than tapers a tad.

im thinking that my N75K valve is bad and needs to be replaced. Are there other N75s to use besides the K and B valves?

[Evilevo]

The only thing that is scaring me is the fact that in 4th gear, the second part of the log after boost drops off and comes back on, the boost is higher than requested. I have not taken the car all the way thru 4th or into 5th yet so i dont know how high it will go in those gears.

Like all of you, i dont really wanna blow my motor

[Rajan147]

why not just run a boost controller in parallel to clip the boost spikes when your crank it up to your desired boost?

[Evilevo]

I would, but I don't know how to wire it up in parallel. I have a hallman pro MBC in the glovebox

[Evilevo]

This is boost curve, I am just skeptical of it going past requested boost when i went into the next gear

[The_Jerbel]

Is that N75b a known-working valve? It looks like you either have a boost leak somewhere (possibly the IC's), or else that valve is also FUBAR.
The minor over-boosting is not a problem. If it were 3 or 4 psi then I would worry. Your boost doesn't come on til 4k rpms which is why the car feels slow.
BTW, only use the N75k race valve if your car is tuned for it.

[Evilevo]

I dont know if the N75B is working or not. It was given to me when i bought the car. I have a feeling it isnt working right based on how it is boosting which is why i am running the car on stock map and stock boost right now.

When i bought the car, it had the N75K on it. idk if it tuned for it, i doubt it as it will only boost 20psi

[The_Jerbel]

Judging by the way it was running, the car isn't tuned for that k valve.

[Evilevo]

Yea, I am trying to get my hands on another B valve to test to see if it broken or not.

My friend said he might have a J valve or something, What are the differences in the different N75 valves? Which one would be best to use?

[Evilevo]

Also, there are no boost leaks whatsoever. The car was pressure tested and smoke tested a day ago.

[AudiSportB5S4]

try to scoop a new N75 up... im trying to think of the boost freq valve duty cycle in VAG but its not ringing a bell. maybe you can log that and it will show whats going on with it.... ive never heard of all these different letters after the N75 ! lol sounds like the alphabet to me

[Evilevo]

Ok, so i put a brand new N75K on the car. Runs perfectly. Car hauls ass!

Now just to do my basic maintenance shit :(

Ill do some logs later today just to make sure