VF35 "safe boost" threshold. - Page 3 - Perth-WRX.com

creepin · #21 11-10-2005, 05:40 PM

Quote:

Originally Posted by tuna

i run the VF35 to its physical limit, it holds 1.6/1.5 bar for as long as it can, then tapers down to 1.2bar at redline

even though i have a front mount, i rarely see intake temps exceed more then 5-7 degrees more then ambient even at full noise.

unfortunately your top mount is what is holding you back

i dont feel so bad now coz someone else runs 1.5 bar

#22 12-10-2005, 03:49 PM

Quote:

Originally Posted by creepin

i dont feel so bad now coz someone else runs 1.5 bar

Only diff being properly done.

methd · #23 12-10-2005, 07:21 PM

get a fmic over meth injection. keep it simple. the less things that can go wrong the better.

dnbosiris · #24 23-06-2015, 12:56 PM

I have a vf35 and a "fresh" ej207 and my latest tune sees me boosting up to 2bar in fourth gear onwards. This is as per my boost gauge which shows like 28psi. I've driven it like this for a month or so (plenty of WOT pulls) and its been fine. No detonation as per my obd2 app. Should I assume my boost gauge is reading high or should I turn the boost down (don't really wanna do this

)

It's reading from this hose.
Oh and I was told by the tuner its set to 24psi

Brett Allan · #25 24-06-2015, 11:45 PM

2 bar is a lot. Even for a 207. Mine hits 21 pound ~ 1.5 bar and tapers off to around 16 psi. I would be getting a second opinion.

A boost gauge mechanical or electrical is usually pretty accurate.

using the Perth-WRX mobile app

V3 RA · #26 25-06-2015, 01:19 AM

Quote:

Originally Posted by Brett Allan

2 bar is a lot. Even for a 207. Mine hits 21 pound ~ 1.5 bar and tapers off to around 16 psi. I would be getting a second opinion.

A boost gauge mechanical or electrical is usually pretty accurate.

using the Perth-WRX mobile app

Ask Sean from ASG how much boost his 500hp gc8 (stock 207 bottom end) was running.

dnbosiris · #27 25-06-2015, 08:02 AM

Quote:

Originally Posted by V3 RA

Ask Sean from ASG how much boost his 500hp gc8 (stock 207 bottom end) was running.

From memory he had 30psi in there but good tip I will ask him👍

dnbosiris · #28 25-06-2015, 08:07 AM

Quote:

Originally Posted by Brett Allan

2 bar is a lot. Even for a 207. Mine hits 21 pound ~ 1.5 bar and tapers off to around 16 psi. I would be getting a second opinion.

A boost gauge mechanical or electrical is usually pretty accurate.

using the Perth-WRX mobile app

Seems most people don't tend to stray above about 1.4/1.5bar on the 207, however theres the odd person running up to 2bar seemingly without issue. I found it very interesting when my tuner said that the much higher boost is safe so long as your afr and timing is safe as well, which I believe it is. I will keep asking around though.

Rossco · #29 25-06-2015, 10:21 AM

Quote:

Originally Posted by V3 RA

Ask Sean from ASG how much boost his 500hp gc8 (stock 207 bottom end) was running.

I thought it had 14mm head studs?

RJ999 · #30 25-06-2015, 10:31 AM

Quote:

Originally Posted by dnbosiris

Should I assume my boost gauge is reading high or should I turn the boost down (don't really wanna do this

)

Oh and I was told by the tuner its set to 24psi

What you should really assume is the fact that your tuner's software isn't configured correctly and isn't reading your engine parameters correctly...
...and also sees knock on engines that are running perfectly.