# \#damos-injcrv-phimi1bas

**URL:** https://community.tunersguild.com/tag/damos-injcrv-phimi1bas/134.md

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## [Why does my 21% diesel tuning strategy give only 10-15% real gain?](https://community.tunersguild.com/t/why-does-my-21-diesel-tuning-strategy-give-only-10-15-real-gain/114)

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**Author:** [@ThomasPirowski](https://community.tunersguild.com/u/ThomasPirowski)\
**Replies:** 0\
**Last updated:** [April 30, 2026, 6:14am UTC](https://community.tunersguild.com/t/why-does-my-21-diesel-tuning-strategy-give-only-10-15-real-gain/114 "2026-04-30T06:14:51Z")

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A 21% diesel tuning strategy yields only 10-15% real gain because the math is correct but the hardware can’t deliver. Intercooler, intake, and exhaust flow limits cap torque growth before the math can finish. This is not…

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## [Should I change SOI timing by degrees or percent on diesel? And which maps?](https://community.tunersguild.com/t/should-i-change-soi-timing-by-degrees-or-percent-on-diesel-and-which-maps/113)

<div class="topic-metadata">

**Author:** [@ThomasPirowski](https://community.tunersguild.com/u/ThomasPirowski)\
**Replies:** 0\
**Last updated:** [April 29, 2026, 7:14pm UTC](https://community.tunersguild.com/t/should-i-change-soi-timing-by-degrees-or-percent-on-diesel-and-which-maps/113 "2026-04-29T19:14:46Z")

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Change SOI (Start of Injection) timing in degrees, not percent — the map you want is DAMOS folder InjCrv\_MI1 / map InjCrv\_phiMI1Bas on EDC16/17/MD1. The SOI map is independent of fuel amount, so degrees give exact effici…