Gizmo20VT
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« on: November 18, 2012, 11:13:47 PM »
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Hey Peeps Looking for some input on something we might have missed, We are setting LDRXN for WOT and this is the result of our 3rd gear boost log. Im running external 38mm Tial wastegate with the N75 connected to bottom port. The only changes to the map are KFLDHBN, KFMLDMX, LDRXN, LDRXNZK currently. Other Specs 1.8T AMK GT2871R 630cc Deka's OEM N75  |
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« Last Edit: November 26, 2012, 01:31:40 AM by Gizmo20VT »
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prj
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« Reply #1 on: November 19, 2012, 02:15:49 AM »
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You missed the entire LDRPID module.
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professor
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« Reply #2 on: November 19, 2012, 03:06:26 AM »
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Also the boost rises too slow for 2871.
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Seat Ibiza MK4 Cupra 1.8t 20V, stg3.
"Those 1.8T 20V machines are really tough" ©
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sn00k
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« Reply #3 on: November 19, 2012, 03:22:20 AM »
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as prj mentioned above, have a look at KFLDRL and the whole PID and tune it to match the wastegates "cracking pressure" and characteristics.
whats up with the slow spool? building 1.0 bar boost should not take untill 4900rpm with this turbo unless using 1.06 turbine and camshafts with race/high rpm profiles.. (normally you would se 1.0bar at ~3600rpm.)
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Gizmo20VT
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« Reply #4 on: November 19, 2012, 03:23:20 AM »
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this is still the very first step of the map basically, also its fitted with a .84 housing and in Johannesburg we are around 5500ft above sea level. We still have a long way to go I beleive!
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prj
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« Reply #5 on: November 19, 2012, 03:37:11 AM »
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Probably you mean .82...
And .82 is too big for the 1.8T engine.
Your spool characteristics are like a GT30R car I mapped a while ago with a 0.63 hotside.
It had 2.3 bar at 5000 rpm.
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Gizmo20VT
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« Reply #6 on: November 19, 2012, 03:45:13 AM »
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my apology, yes .82, think .84 is t3 housing? I do plan on upgrading valve train at a later stage to accomodate shifting at 8000rpm and the .82 housing should keep power up to 8k rpm. I didnt expect the lag to be this bad as I was hoping to have my full boost 20 psi at around 4500  , not looking at changing the turbine AR thou. |
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« Last Edit: November 19, 2012, 03:47:55 AM by Gizmo20VT »
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Bische
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« Reply #7 on: November 19, 2012, 04:08:20 AM »
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That looks slow even for a .82, looks like you have a 30r housing on a 28  I have a brand new Garrett t25 .64 housing laying in my garage after I built my HTA2868r to an eliminator. Let me know if you are interested. |
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Rick
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« Reply #8 on: November 19, 2012, 04:14:08 AM »
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on a 2871R 0.8x isn't too big if it's a T2 housing.
Rick
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Gizmo20VT
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« Reply #9 on: November 19, 2012, 04:15:51 AM »
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What am I doing wrong then that its spooling so slow? I have no leaks, and also a 3" downpipe, custom manifold with a peak in the merge collector.  |
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Rick
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« Reply #10 on: November 19, 2012, 04:44:31 AM »
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More logs needed. First you need to work out if it's software or hardware. N75 duty will go a long way to telling you that.
Rick
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Gizmo20VT
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« Reply #11 on: November 19, 2012, 05:00:40 AM »
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This is one of my logs
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ibizacupra
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« Reply #12 on: November 19, 2012, 06:11:27 AM »
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This is one of my logs
i see what you mean. this on stock capacity on this 0.8x hotside? not much timing in there on spool |
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airtite
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« Reply #13 on: November 19, 2012, 06:18:37 AM »
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More logs needed. First you need to work out if it's software or hardware. N75 duty will go a long way to telling you that.
Rick
n75 duty is at 100% until actual meets spec |
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Gizmo20VT
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« Reply #14 on: November 19, 2012, 06:31:04 AM »
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i see what you mean.
this on stock capacity on this 0.8x hotside?
not much timing in there on spool
I have Airtite assisting me with my car mapping so we will still get to timing and so on, this is a base file just so I can drive the car, going to try swap out N75 tonight to see if the unit might be failing mechanically. Just not the spool I expected from the current setup as this is my first BB turbo, and it spools like my journal spec t3. I know with some more time spent on the map that it could increase but I doubt we could get it to spool 500 RPM quicker without running really high EGT. |
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« Last Edit: November 19, 2012, 06:33:50 AM by Gizmo20VT »
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