chiptuner123
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« on: December 06, 2017, 11:01:53 AM »
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the car is skoda octavia 180hp .0 261 206 440 do you know anyone I tune for 1.5 over boost and 1.0 at red line.The problem is that never I see over 1.2bar.The the turbo is new with original wast gate. The question is....... need other wast gate like forget???
MAF and N75 are new
Note: I do the next test.I disconnect the wast gate hose then go to 1.7 bar and I cut the pedal.
Note: In other same octavia but other ecu part number, I make same tunes and go at 1.6 over boost without problems at all.
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Dave9n3
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« Reply #1 on: December 06, 2017, 11:03:46 AM »
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Use ME7logger, upload us some logs along with the mod file and a map pack so we can see what has been changed and how the motor is running.
without this its hard to help.
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HelperD
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« Reply #2 on: December 06, 2017, 11:08:03 AM »
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If you are trying to command 1.5bar I would look into setting the wastegate cracking pressure a little higher. If it is stock turbo I would be careful with that kind of boost.
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chiptuner123
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« Reply #3 on: December 06, 2017, 11:38:09 AM »
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you mean mechanical pressure of wast gate.I must turn the bolt of wast gate more to rise the mechanical pressure? or I use stronger spring??
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HelperD
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« Reply #4 on: December 06, 2017, 12:16:09 PM »
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If you are not maxed out in your adjustment then of course you have wiggle room to mechanically increase WGCP. If you are unable to hold boost regardless of how much you set the rod then you will likely be looking into a stronger wastegate, which I don't believe you will require for 1.5 bar. Again, bad idea on stock turbo to run this pressure for long periods of time.
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Dave9n3
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« Reply #5 on: December 06, 2017, 12:34:29 PM »
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If you are not maxed out in your adjustment then of course you have wiggle room to mechanically increase WGCP. If you are unable to hold boost regardless of how much you set the rod then you will likely be looking into a stronger wastegate, which I don't believe you will require for 1.5 bar. Again, bad idea on stock turbo to run this pressure for long periods of time.
wouldn't it be much easier if he just posted some actual data? rather than just assuming he needs more pre-load.. |
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HelperD
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« Reply #6 on: December 06, 2017, 01:40:28 PM »
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Yes of course, data helps just offering suggestions if nothing software wise is working for him  |
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chiptuner123
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« Reply #7 on: December 07, 2017, 12:02:23 AM »
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THANKS TO ALL
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Dave9n3
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« Reply #8 on: December 07, 2017, 03:27:33 AM »
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What values have you set in LDRXN?
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chiptuner123
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« Reply #9 on: December 07, 2017, 04:34:37 AM »
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LDRXN
90,0000 108,0000 136,0781 145,6406 153,0938 159,6797 163,0781 164,5078 165,4922 166,4766 166,1484 165,0703 163,9219 159,8906 154,6641 146,4141
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gt-innovation
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« Reply #10 on: December 07, 2017, 05:54:53 AM »
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the car is skoda octavia 180hp .0 261 206 440 do you know anyone I tune for 1.5 over boost and 1.0 at red line.The problem is that never I see over 1.2bar.The the turbo is new with original wast gate. The question is....... need other wast gate like forget???
MAF and N75 are new
Note: I do the next test.I disconnect the wast gate hose then go to 1.7 bar and I cut the pedal.
Note: In other same octavia but other ecu part number, I make same tunes and go at 1.6 over boost without problems at all.
You need to post proper logs of you car to get an appropriate response as all the members suggested here. Btw what is the mileage of your car? |
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HelperD
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« Reply #11 on: December 07, 2017, 06:26:52 AM »
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LDRXN
90,0000 108,0000 136,0781 145,6406 153,0938 159,6797 163,0781 164,5078 165,4922 166,4766 166,1484 165,0703 163,9219 159,8906 154,6641 146,4141
You are not commanding close to 1.5bar here. These values would be commanding closer to 13 PSI. You should look through the wiki to see how to get an approximation of boost through LDRXN values. |
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chiptuner123
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« Reply #12 on: December 07, 2017, 07:35:30 AM »
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new check it please
90,7500 110,0156 130,5234 146,9531 162,7266 172,7813 182,6953 187,3594 190,4297 188,9766 183,7734 178,1953 172,9922 169,7344 167,2031 165,3984
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Dave9n3
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« Reply #13 on: December 07, 2017, 07:52:11 AM »
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read the stage 1 community thread, and also the s4 tuning wiki.
It's relatively easy to get a good approximation of load to boost - calculation is in the s4 wiki.
You also must re tune the PID related maps to control the overshoot.
please get logs, if you can't produce any logs you'll not get much more help.
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HelperD
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« Reply #14 on: December 07, 2017, 09:29:53 AM »
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As Dave is saying, have a read through the Wiki. I can tell you at next glance of your new LDR values they are still coming short of the 1.5 you want to achieve. If you want more help please do some more reading and put in more of an effort to reading through the resources available.
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