How much boost

[Whatabouteggs]

About this much

/illustrates with hand gestures

[sandman126]

I run 10psi on my 91 tune and 15psi on E85 using a precision 5130

[Whatabouteggs]

Actually I think it's been established that the limit on stock engines with an excellent tune and 93 is 9psi without causing a lot of damage. On something with no supporting mods and an ebay turbo kit? Maybe 5.

Whatever, this is a dumb thread.

[woode]

Originally Posted by Whatabouteggs

Actually I think it's been established that the limit on stock engines with an excellent tune and 93 is 9psi without causing a lot of damage. On something with no supporting mods and an ebay turbo kit? Maybe 5.

Whatever, this is a dumb thread.

The quality of the kit has pretty much nothing to do with the amount of boost you can run. That is mostly the tune and fuel. 9psi on 93 being the most without causing damage is not true either. Many many people are running 12psi or so, several 16psi+, and at least one (myself) have run 22psi without breaking anything at all.

[sw20kosh]

Originally Posted by woode

The quality of the kit has pretty much nothing to do with the amount of boost you can run. That is mostly the tune and fuel. 9psi on 93 being the most without causing damage is not true either. Many many people are running 12psi or so, several 16psi+, and at least one (myself) have run 22psi without breaking anything at all.

Didn't you say a lil while back that you think something is broken in your engine?

Anyways, you have proven that you can run 22 psi and retard the snot out of the ignition timing to do it on 93 octane. It can be done. Is it advisable? The 4 tuners that I have talked to (that have also tuned my car) say "hell no". Your tuner obviously says its ok.

The ones that I have talked to all agree that you get to a certain boost level where increasing the boost more just causes too much timing to be pulled that it just isn't worth the risk of raising your EGT's like that and stressing the (originally NA high crompression) motor out. If the engine was built for huge boost then it might be a different story.

But glad yours is still running strong and I am really curious as to how your setup would fare doing hot laps on a road course. It would show just how tough this FA20 is. As it stands, here in CA, turbo guys at the track are weary of going anywhere above wastegate spring pressure. Most of us are running somewhere in the 6-9 psi on E85 or 100 octane (keeping it right around 300 whp) to have some insurance that the motor stays together for prolonged track use.

[cdrazic93]

I'm running approx. e^x bars of boost.

x is how ballsy I feel that day.

[woode]

Originally Posted by sw20kosh

Didn't you say a lil while back that you think something is broken in your engine?

Anyways, you have proven that you can run 22 psi and retard the snot out of the ignition timing to do it on 93 octane. It can be done. Is it advisable? The 4 tuners that I have talked to (that have also tuned my car) say "hell no". Your tuner obviously says its ok.

The ones that I have talked to all agree that you get to a certain boost level where increasing the boost more just causes too much timing to be pulled that it just isn't worth the risk of raising your EGT's like that and stressing the (originally NA high crompression) motor out. If the engine was built for huge boost then it might be a different story.

But glad yours is still running strong and I am really curious as to how your setup would fare doing hot laps on a road course. It would show just how tough this FA20 is. As it stands, here in CA, turbo guys at the track are weary of going anywhere above wastegate spring pressure. Most of us are running somewhere in the 6-9 psi on E85 or 100 octane (keeping it right around 300 whp) to have some insurance that the motor stays together for prolonged track use.

Nothing wrong with my engine?

I have a little bit different setup and moved a couple months ago and am running mostly 13psi now tuned by PTuning (side note: awesome guys.). I never claimed that it would last prolonged track use.. in fact I have stated many many times that that is the million dollar question to factor in - how is one going to actually drive the car? For a daily driver 12psi and maybe higher (I did it at 22psi for just under a year) can hold together just fine.

My whole point is that you can't just slap a generic hp/tq/boost/etc number on and say that is the limit. This platform has had stock engines blow at 200whp and others live at 500whp+.

[sw20kosh]

Originally Posted by woode

Nothing wrong with my engine?

I have a little bit different setup and moved a couple months ago and am running mostly 13psi now tuned by PTuning (side note: awesome guys.). I never claimed that it would last prolonged track use.. in fact I have stated many many times that that is the million dollar question to factor in - how is one going to actually drive the car? For a daily driver 12psi and maybe higher (I did it at 22psi for just under a year) can hold together just fine.

My whole point is that you can't just slap a generic hp/tq/boost/etc number on and say that is the limit. This platform has had stock engines blow at 200whp and others live at 500whp+.

What is your setup now and how much power are you making at 13 psi? I've been tuning with Toan for 6 months or so. Awesome tuner!

[woode]

Originally Posted by sw20kosh

What is your setup now and how much power are you making at 13 psi? I've been tuning with Toan for 6 months or so. Awesome tuner!

~322hp, botched FA20Club kit that has been mostly fixed. Slowly piecing together a new (lower compression) engine and then going to switch to either the 335 or a PTuning kit - hopefully by spring. Although, a kid on the way now so that might be delayed even more..

[cdrazic93]

Originally Posted by woode

~322hp, botched FA20Club kit that has been mostly fixed. Slowly piecing together a new (lower compression) engine and then going to switch to either the 335 or a PTuning kit - hopefully by spring. Although, a kid on the way now so that might be delayed even more..

Quick, switch to both before the kid comes! Get a 335 and slap on that gt3076

[Boofneenee]

According to Crawford's YouTube posting of their white boosted FRS with upgraded internals no amount of boost is safe for this high compression engine. ..... They also sell fa20 engines with lower compression so I question their intentions.

[King Tut]

More likely that no FRS is safe in Crawford's hands.

[ft86me]

Stock injectors
stock fp
jdl turbo kit with 4854 base turbo
91 octane 13psi wot 6 to 8 half or partial throttle
no problems

before jdl turbo kit,
vortech w 12psi pulley
stock injectors
stock fp
91 oct
no issues

car has over 30k with about 24k boosted.

[sw20kosh]

Originally Posted by King Tut

More likely that no FRS is safe in Crawford's hands.

This.