Tuning for a quieter startup

GrayGhost · 06-08-2019, 06:50 PM

At the moment my exhaust is stock but I have ART pipes waiting in the garage and a full CBE on it’s way and I expect my start ups to annoy some of my neighbors.

During startup the car the car idles at ~2k and then slowly drops within a minute or two which i assume is to pre heat the cats for better emissions and at least get some extra heat in the oil and water before driving away.

I would like to know if it is advisable or even doable to tune the idle with uprev and have it linger at 1k before going down to normal idle?

I would still give the car extra time before i drive away in order to get the blood flowing and get at least a little heat in there

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GrayGhost · 06-09-2019, 03:22 PM

Bump

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seymore4 · 06-09-2019, 05:08 PM

Yes that is adjustable

CRiZO · 06-09-2019, 05:30 PM

That high idle is to help move fuel into the engine, it'll have trouble idling cold at lower rpms.

dts3 · 06-09-2019, 05:35 PM

Have your neighbors said anything? Maybe they're sitting in their rooms wishing their car sounded like yours...

GrayGhost · 06-10-2019, 02:47 PM

CRiZO - could you elaborate on what you mean please. From my understanding of the fuel system, the fuel is primed in the lines prior to startup. Also, are you referring to cold temperatures like in snow states? Im in florida so cold temperatures don’t exist.

Dts3 - haven’t installed it yet. In fact, it almost was delivered this afternoon but I wasn’t home to sign for it. But it’s the Greddy EVO GT, so you tell me if my neighbors will love/hate/envy me. I will have ART pipes so i should be a tad bit louder than yours.

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Whjaxn17 · 07-01-2019, 02:00 PM

Quote:

Originally Posted by GrayGhost

CRiZO - could you elaborate on what you mean please. From my understanding of the fuel system, the fuel is primed in the lines prior to startup. Also, are you referring to cold temperatures like in snow states? Im in florida so cold temperatures don’t exist.

Dts3 - haven’t installed it yet. In fact, it almost was delivered this afternoon but I wasn’t home to sign for it. But it’s the Greddy EVO GT, so you tell me if my neighbors will love/hate/envy me. I will have ART pipes so i should be a tad bit louder than yours.

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Can't say whether they'll love or hate it, but they'll certainly know when you get home/leave. It rattles my bathroom mirror.

06-08-2019, 06:50 PM	#1 (permalink)
GrayGhost Base Member Join Date: Sep 2017 Location: Florida Posts: 106 Drives: 40TH Rep Power: 7	Tuning for a quieter startup At the moment my exhaust is stock but I have ART pipes waiting in the garage and a full CBE on it’s way and I expect my start ups to annoy some of my neighbors. During startup the car the car idles at ~2k and then slowly drops within a minute or two which i assume is to pre heat the cats for better emissions and at least get some extra heat in the oil and water before driving away. I would like to know if it is advisable or even doable to tune the idle with uprev and have it linger at 1k before going down to normal idle? I would still give the car extra time before i drive away in order to get the blood flowing and get at least a little heat in there Sent from my iPhone using Tapatalk

06-09-2019, 05:35 PM	#5 (permalink)
dts3 Track Member Join Date: May 2018 Location: Farmington Hills, MI Posts: 599 Drives: 08 Expedition Rep Power: 6764	Have your neighbors said anything? Maybe they're sitting in their rooms wishing their car sounded like yours... wideglideleon and busterbull like this.

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06-09-2019, 03:22 PM	#2 (permalink)
GrayGhost Base Member Join Date: Sep 2017 Location: Florida Posts: 106 Drives: 40TH Rep Power: 7	Bump Sent from my iPhone using Tapatalk

06-09-2019, 05:08 PM	#3 (permalink)
seymore4 Track Member Join Date: Nov 2010 Location: West coast Age: 41 Posts: 555 Drives: 2010 nismo Rep Power: 6726	Yes that is adjustable

06-09-2019, 05:30 PM	#4 (permalink)
CRiZO Track Member Join Date: Nov 2017 Location: Dallas Posts: 672 Drives: in traffic Rep Power: 20698	That high idle is to help move fuel into the engine, it'll have trouble idling cold at lower rpms.

06-10-2019, 02:47 PM	#6 (permalink)
GrayGhost Base Member Join Date: Sep 2017 Location: Florida Posts: 106 Drives: 40TH Rep Power: 7	CRiZO - could you elaborate on what you mean please. From my understanding of the fuel system, the fuel is primed in the lines prior to startup. Also, are you referring to cold temperatures like in snow states? Im in florida so cold temperatures don’t exist. Dts3 - haven’t installed it yet. In fact, it almost was delivered this afternoon but I wasn’t home to sign for it. But it’s the Greddy EVO GT, so you tell me if my neighbors will love/hate/envy me. I will have ART pipes so i should be a tad bit louder than yours. Sent from my iPhone using Tapatalk