what is the maximum amount of boost you can run on pump gas?

93 octane

With my car, the most boost I could run on 93 octane is about 17-18 psi. I tried running 20 psi once and I heard detonation, and this is with timing retard and 625cc injectors. Safely, I think 15-17 daily should be OK. This is only MY opinin though

___________
Kon C

"Sometimes, a man has to do what a man has to do."

yeah from all the info i gathered, 18psi seems to be the limit on pump gas. Pulling more timing wont be good, and running more rich wont make more power, so doing those wont help to run more. Time for octane booster or race gas.

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I run 18psi, w/ some more tuning on a dyno I think I can easily manage 20psi.

It also depends on compression. Like I have 8:1 compression so I'll be able to run more boost than most here on 93 octane. Of course I'll have to run higher boost to get to the same power level as them so it's really a moot point I guess.

why can those damn hondas run around 22psi of boost on pump gas safely?

>why can those damn hondas run around 22psi of boost on pump
>gas safely?

^^^^^^^^^^^^^ ive never ever heard of that, maybe 10-15 psi's the most, after that, they need to upgrade the internals, but 22 psi's is highly doubtful.

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I run 20psi on pump (93). It's nice!

Greg

'19 Genesis G70 3.3t AWD
'88 Chrysler Conquest TSI

i didn't mean on stock internals, but there is a honda civic SI with a t3/t4 turbocharger running 22psi, on pump gas. That is why i asked.

and i also have a video of a 1.8T Golf running 22psi on pump gas, in the orlando area.

>i didn't mean on stock internals, but there is a honda civic
>SI with a t3/t4 turbocharger running 22psi, on pump gas.
>That is why i asked.
>
>and i also have a video of a 1.8T Golf running 22psi on pump
>gas, in the orlando area.

ive rarely seen 22 psi's on a built honda motor, more like 14-16 is realistic, 22 psi's on a honda motor (say a 1.8 vtech) is close to 11s. and theres few to none of them prowling the streets every day.

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a guy i met at the track was running a 4 door 94 axxord with a fmic and well your basic stage 2 setup @ 7 punds and running 14's... wtf man.... oh well. He was a 5 spd.

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with built motors 22psi is not that hard to hit, armond hit 28 psi the one time before his motor went lean,

there are people running high boost its just not that many, the phat ridz 2.4 neon is running 25psi plus on 11:1 compression witha 250shot of nitrous! now thats a kick in the pants

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http://www.vwsport.com/file/pafiledb.php?action=file&id=735

check out that video

>with built motors 22psi is not that hard to hit, armond hit
>28 psi the one time before his motor went lean,
>
>there are people running high boost its just not that many,
>the phat ridz 2.4 neon is running 25psi plus on 11:1
>compression witha 250shot of nitrous! now thats a kick in
>the pants

hes refering to street driven cars....

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hmm what about with 10.5:1 compression?

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Large turbos mean more efficiency. A S16G will run into limits of how much boost it can run before a T3/T4. They can run more boost because they have more people established doing it. No reason why we can not either. It just means someone has to eventually do it.

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