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Diesel Engines A forum dedicated to diesel engines fitted to Volvo cars. See the first post in this forum for a list of the diesel engines. |
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D5252T with GT28 turboViews : 1057 Replies : 3Users Viewing This Thread : |
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Feb 25th, 2021, 20:18 | #1 |
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Last Online: Feb 17th, 2023 15:18
Join Date: Dec 2020
Location: sls
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D5252T with GT28 turbo
Hello my volvo now have GT28(wg tubo) turbo there any isues to reduce turbo lag? Now turbo starting spool at 3k rpm and have 0.9bar boost. GIBONTA Race nozzles 0.260, new ic, straight exhaust, ecu chip not too much. There is no black smoke. When rmp gets about 4k rpm turbo spool nice 1,5bar. Any ideas how to reduce turbo lag ??
Last edited by zagaronas; Feb 25th, 2021 at 20:23. |
Feb 26th, 2021, 00:45 | #2 |
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Last Online: Jun 2nd, 2024 22:52
Join Date: Oct 2011
Location: Groningen
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Use a smaller turbo ;-)
Less inertia quicker spoolup but less top end power Cant have both worlds , or have a vnt turbo , takes care of most of the lag....but your ecu doesnt support that function |
Mar 1st, 2021, 12:49 | #3 |
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Last Online: Feb 17th, 2023 15:18
Join Date: Dec 2020
Location: sls
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How about fuel pump injection timing change? If make it earler i shoud get faster spool?
After long searching i found that he221w turbo fits for 5cyl engine. How about this turbo spool? This turbo makes better mid and high rpm range? |
Mar 2nd, 2021, 01:06 | #4 |
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Last Online: Jun 2nd, 2024 22:52
Join Date: Oct 2011
Location: Groningen
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Youre chasing ghosts, turbo mass is too high
Even if you have the right size turbo you will be restricted top end and still have some lag If you want driveabilety with no or little lag , you have to have a variable vane turbo or dual turbo setup, but again your ecu doesnt support that The best you can do in this situation is a somewhat normal turbosize and get your air/fuel ratio to no less than 20/19 to one to supress smoke. Thats all you can do Last edited by 5cilinder; Mar 2nd, 2021 at 01:09. |
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chip, d5252t, gt28, nozzles, turbo |
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