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nyet
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« Reply #15 on: August 01, 2015, 10:56:04 AM »
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That is VERY low... i'd get a new actuator.
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ME7.1 tuning guideECUx PlotME7Sum checksumTrim heatmap toolPlease do not ask me for tunes. I'm here to help people make their own. Do not PM me technical questions! Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your ex
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!nfern0
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Audi TT 1.8T BAM
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« Reply #16 on: August 20, 2015, 03:53:49 AM »
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1. New actuator, same pressure (unplugged N75)... see screenshot. Should I increase the preload of the spring?
2. After installing a third MAF... the values seem to be ok -> up to 220 g/s.
3. Attached a screenshot and log of 5th gear. above 5500 RPM the engine begins to struggle to hold the desired boost pressure (I don't have any experience with 1.8t k04 engines... maybe it's not possible to get more pressure, but it's just slightly above stock). Maybe the low preload of the actuator spring has also affect on this?
(I know I have to work on fueling)
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aef
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« Reply #17 on: August 20, 2015, 04:24:36 AM »
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correct me if im wrong but if this is a BAM with stock K04 the airmass of 220g
with this little boost doesnt make sense
you hitting bts because of very high egt
thatswhy your fueling and timing is off most if the time
where is your nmax?
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!nfern0
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Audi TT 1.8T BAM
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« Reply #18 on: August 20, 2015, 05:39:18 AM »
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correct me if im wrong but if this is a BAM with stock K04
correct! a BAM with stock K04 the airmass of 220g
with this little boost doesnt make sense
OK, maybe it's because it is a Eberspächer MAF and not a Bosch. It has the same OE-Partnumber. You say "little boost", so this engine should be able to do more? in which RPM areas? you hitting bts because of very high egt
thatswhy your fueling and timing is off most if the time
Yep, that's why I wrote I have to work on fueling. where is your nmax?
Stock -> 6800 rpm. |
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aef
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« Reply #19 on: August 20, 2015, 06:02:36 AM »
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Its 120€ to get a genuine bosch maf in germany.
1.8t K04 stage1 should see 1,4bar at least.
I dont understand why your EGT is 900+ °C in the mid rpm range.
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spacey3
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« Reply #20 on: August 20, 2015, 06:23:41 AM »
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I dont understand why your EGT is 900+ °C in the mid rpm range.
The log is in 5th gear, full boost (18psi) for 1k rpm at 14.0 afr I would think is the reason why it gets so hot so quickly |
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aef
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« Reply #21 on: August 20, 2015, 06:48:33 AM »
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Ah, better do 3rd gear Logs.
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spacey3
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« Reply #22 on: August 20, 2015, 07:15:50 AM »
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As it's been brought up though, I think it should be resolved.
Shouldn't we generally be decreasing the afr as boost rises and then hitting rich peak at peak boost?
Something for you to look at !nfern0.
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!nfern0
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Audi TT 1.8T BAM
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« Reply #23 on: August 20, 2015, 09:01:45 AM »
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Yes of course, I'm aware of that. The next time I flash the ECU there will be more fuel.  But this will not solve the problem, that the car isn't reaching it's requested boost above 5000 RPM, although it's just a little bit above stock. Same question again: Is the pressure of about 0.3 bar with disconnected N75 too low? |
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aef
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« Reply #24 on: August 20, 2015, 11:47:26 AM »
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Should be 0,5bar
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nyet
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« Reply #25 on: August 20, 2015, 12:44:45 PM »
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That is VERY low... i'd get a new actuator.
... |
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ME7.1 tuning guideECUx PlotME7Sum checksumTrim heatmap toolPlease do not ask me for tunes. I'm here to help people make their own. Do not PM me technical questions! Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your ex
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adam-
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« Reply #26 on: August 20, 2015, 01:02:26 PM »
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aef
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« Reply #27 on: August 20, 2015, 10:44:03 PM »
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He replaced his Wastegate Actuator against a new one already.
How did you replace it or which values did you adjust it to?
If you did it right and it still builds no boost of 0,5bar without N75 connector i would say turbo is dead.
Would recommend to unplug the pressure line to the wg actuator and do a test drive very very careful.
It should build massive boost without line connected.
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!nfern0
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Audi TT 1.8T BAM
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« Reply #28 on: August 21, 2015, 12:46:50 AM »
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I mounted the WG-lever at the same position on the actuator-rod where it was with the old actuator. Could be that someone in the past of the car has misplaced it...
I will disconnect the N75 again and will increase the spring preload, until i get about 0,5 bar. OK?
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aef
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« Reply #29 on: August 21, 2015, 01:25:12 AM »
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I dont know whats the right way to do it on a stock k04. Is the WG actuator a genuine borg warner part or eberspächer  according to the internet: mount the actuator in place to the wg is shut. give it another 360 degree on the nut to tighten it a bit more. |
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