How much boost and timing

Mauled · 04-30-2023, 10:04 AM

How much boost and timing can I run on a ej207 v8 with stock bottom end, gtx 3076r + meth, 625 head studs, and built heads with cams?

Right now I'm running 27 psi and 24 degrees at redline but I want more power. How much can I turn it up?

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K3rm1tth3fr0g · 04-30-2023, 11:47 AM

We can't tell you this as it varies from engine to engine.

Your tuner is the only one who should be altering timing and boost if you aren't comfortable tuning yourself.

19std · 04-30-2023, 01:19 PM

Depends on a lot if things you didn't list, but from naisoc water meth sticky:

"I want m@d p0w3r y0! Great! Some have been able to go as agressive as: 3 more PSI, 5 more degrees timing, and 12.5-1 a/f without detonation and safe EGTS!!!!!!!!"

Although i would be more concerned with the torque capabilities and clearances of your rods and pistons at this point cause your already at the big boy boost numbers.

See sticky here:
https://forums.nasioc.com/forums/showthread.php?t=937176

Good lean bedtime reading.

subaru_gc8 · 05-02-2023, 01:19 PM

Quote:

Originally Posted by Mauled

How much boost and timing can I run on a ej207 v8 with stock bottom end, gtx 3076r + meth, 625 head studs, and built heads with cams?

Right now I'm running 27 psi and 24 degrees at redline but I want more power. How much can I turn it up?

tyr in small incriments. 24 is a pretty good amount if you want more I would go with a bigger turbo, ie 3576 or the new g30 770, what are you making btw?

Mauled · 05-02-2023, 03:25 PM

I might just get a bigger turbo 3582 or 3576 maybe. I'm just worried about spool it already doesn't spool till 5k. I never dynod it but I'd say its making around 480.

04-30-2023, 10:04 AM	#1
Mauled Scooby Newbie Member#: 500169 Join Date: Apr 2019	How much boost and timing How much boost and timing can I run on a ej207 v8 with stock bottom end, gtx 3076r + meth, 625 head studs, and built heads with cams? Right now I'm running 27 psi and 24 degrees at redline but I want more power. How much can I turn it up? * Registered users of the site do not see these ads.

04-30-2023, 01:19 PM	#3
19std Scooby Specialist Member#: 510366 Join Date: Jan 2020	Depends on a lot if things you didn't list, but from naisoc water meth sticky: "I want m@d p0w3r y0! Great! Some have been able to go as agressive as: 3 more PSI, 5 more degrees timing, and 12.5-1 a/f without detonation and safe EGTS!!!!!!!!" Although i would be more concerned with the torque capabilities and clearances of your rods and pistons at this point cause your already at the big boy boost numbers. See sticky here: https://forums.nasioc.com/forums/showthread.php?t=937176 Good lean bedtime reading. Last edited by 19std; 04-30-2023 at 01:47 PM.

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04-30-2023, 11:47 AM	#2
K3rm1tth3fr0g Scooby Specialist Member#: 508105 Join Date: Nov 2019 Chapter/Region: NWIC Location: Greater Seattle Area Vehicle: Link G4X flex tuned 02' EJ205 20G 6MT wagon	We can't tell you this as it varies from engine to engine. Your tuner is the only one who should be altering timing and boost if you aren't comfortable tuning yourself.

05-02-2023, 03:25 PM	#5
Mauled Scooby Newbie Member#: 500169 Join Date: Apr 2019	I might just get a bigger turbo 3582 or 3576 maybe. I'm just worried about spool it already doesn't spool till 5k. I never dynod it but I'd say its making around 480.