Fuel pressure settings ~ "Generally Speaking"
Thread Starter
Burning Brakes
Joined: Jun 2006
Posts: 1,096
Likes: 28
From: Baltimore MD
Fuel pressure settings ~ "Generally Speaking"
As a new C4 (L-98 TPI) owner, I've read/heard that these models usually benefit from the tuneability of adjustable fuel pressure regulators.
"Generally speaking" do you all seem to be adjusting the pressure HIGHER, or LOWER?
reason for asking...
I've had very good luck and results tuning other makes, whether they were naturally aspirated, supercharged, or nitroused. My car has just a few simple mods so far (open air-lid, K&N, de-screened maf, airfoil, muffler eliminators). The car "feels" just like another car I owned in the past, which was running way too lean, even from the factory, and was made even worse with some similar slightly better breathing mods like I have.
Just curious if most have to add fuel pressure, as I believe this car will benefit from?
Thanks.
"Generally speaking" do you all seem to be adjusting the pressure HIGHER, or LOWER?
reason for asking...
I've had very good luck and results tuning other makes, whether they were naturally aspirated, supercharged, or nitroused. My car has just a few simple mods so far (open air-lid, K&N, de-screened maf, airfoil, muffler eliminators). The car "feels" just like another car I owned in the past, which was running way too lean, even from the factory, and was made even worse with some similar slightly better breathing mods like I have.
Just curious if most have to add fuel pressure, as I believe this car will benefit from?
Thanks.
Team Owner
Joined: Sep 2001
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From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
It depends on what injectors people are using. If stock, then you would benefit from turning the pressure up.
But aftermarket injectors like the Ford SVO #24s most use are on the big side for a near-stock engine, so generally you turn it down a bit.
But aftermarket injectors like the Ford SVO #24s most use are on the big side for a near-stock engine, so generally you turn it down a bit.
Le Mans Master
Joined: Feb 2006
Posts: 8,753
Likes: 9
From: Louisiana
Originally Posted by vader86
It depends on what injectors people are using. If stock, then you would benefit from turning the pressure up.
But aftermarket injectors like the Ford SVO #24s most use are on the big side for a near-stock engine, so generally you turn it down a bit.
But aftermarket injectors like the Ford SVO #24s most use are on the big side for a near-stock engine, so generally you turn it down a bit.
only way to really tell is to run a scan to see what the BLM's and INT's are (fuel trims). Or on a dyno.
Thread Starter
Burning Brakes
Joined: Jun 2006
Posts: 1,096
Likes: 28
From: Baltimore MD
Originally Posted by vader86
It depends on what injectors people are using. If stock, then you would benefit from turning the pressure up.
.
.
RRT vette: I have access to a DynoJet, so I can dial in WOT at least. I was just curious what the "general" consensus was.
Le Mans Master
Joined: Feb 2005
Posts: 5,146
Likes: 3
From: The Motor City
Originally Posted by RRT vette
only way to really tell is to run a scan to see what the BLM's and INT's are (fuel trims). Or on a dyno.
