Boost questions

[TurboChris]

Im currently boosting 7psi on I believe its a ATP turbo, i planed on turning up the boost was wondering if anyone new what is safe to boost with stock internals?

[navylife59]

No more than 10PSI. You can get above that with precise tuning, bigger injectors, better fuel pump, return/boost controlled fuel regulator, larger FMIC, and 93 Octane+ or E85 fuel. I am running 15PSI (redline) on a TRD S/C with no IC and on TRD flashed ECM. Only making 214WHP(MAF issue?) but proves that the stock internals can handle it. The stock PCV valve does leak at that boost level pressuring the crank case (not a good thing).

Boost is not boost as a turbo dumps the boost into the cylinders while a S/C brings the boost up in a slow, linear fashion. The difference makes a difference of whether you will end up with cracked piston ring lands and a blown motor. With some expensive equipment and serious engine management, you could run the same boost level with a turbo on an stock motor. But hey, we all don't have deep pockets like Chris Rado. His Chief Engineer states that their 900WHP motor is running with the stock cylinders.


BTW..... Take that all you closed-minded, brainwashed naysayers! ATTACH=CONFIG]2681[/ATTACH]

[TurboChris]

No more than 10PSI. You can get above that with precise tuning, bigger injectors, better fuel pump, return/boost controlled fuel regulator, larger FMIC, and 93 Octane+ or E85 fuel. I am running 15PSI (redline) on a TRD S/C with no IC and on TRD flashed ECM. Only making 214WHP(MAF issue?) but proves that the stock internals can handle it. The stock PCV valve does leak at that boost level pressuring the crank case (not a good thing).

Boost is not boost as a turbo dumps the boost into the cylinders while a S/C brings the boost up in a slow, linear fashion. The difference makes a difference of whether you will end up with cracked piston ring lands and a blown motor. With some expensive equipment and serious engine management, you could run the same boost level with a turbo on an stock motor. But hey, we all don't have deep pockets like Chris Rado. His Chief Engineer states that their 900WHP motor is running with the stock cylinders.


BTW..... Take that all you closed-minded, brainwashed naysayers! ATTACH=CONFIG]2681[/ATTACH]

alrighty well not to sound like to much of a noob but is there anyone who does email tunes thru a handheld tuner for scions? i kno they have those for my cuzins mustang

[navylife59]

Unfortunately, there are no handheld tuners per say. The aftermarket controllers that I spoke of utilize a PC to interface it's tables tru software. This can be a bugger when companies like GReddy don't update their drivers/software to be compatible with MicroSucks annual new OS release. UniChip can preconfigure their piggyback for the tC based on your bolt-ons. Later, you can take it to an Authorized Installer to have it fine tuned on a dyno.