# Got adjusting fuel pressure regulator, keeps requiring adjustment (temp related?)

**URL:** https://forums.speedlife.net/t/got-adjusting-fuel-pressure-regulator-keeps-requiring-adjustment-temp-related/161206
**Category:** NYSpeed Automotive
**Created:** [October 6, 2010, 7:36am UTC](https://forums.speedlife.net/t/got-adjusting-fuel-pressure-regulator-keeps-requiring-adjustment-temp-related/161206 "2010-10-06T07:36:14Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![Brooklyn](https://avatars.discourse-cdn.com/v4/letter/b/ec9cab/32.png) [@Brooklyn](https://forums.speedlife.net/u/Brooklyn)
#### Post date: [October 6, 2010, 7:36am UTC](https://forums.speedlife.net/t/got-adjusting-fuel-pressure-regulator-keeps-requiring-adjustment-temp-related/161206/1 "2010-10-06T07:36:14Z")

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I got a fuel pressure regulator from CosmosRacing, non AEM unit with gauge and when I set it to 3.5 bars in instance 1, drive around, shut off the car, drive around more etc.

Start the car and check the pressure gauge and it would show 4 bars, etc. It does not stay pre-set at 3.5.

Is this normal for fuel pressure to be off in adjusting regulators for colr starts/based on weather temp? Or should I get an AEM one?