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TTE420 with stock rods?

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swansem:
Hi folks,

Just wanted to ask if anyone here who’s upgraded their turbo to a tte420 had the need to do internals as well? More specifically the connecting rods since I’ve heard these are the weakest link in our motors.

I’m trying to squeeze the max amount of power possible out of the stock bottom end (top end was already rebuilt) without having to forge the internals, I’m not sure if our stock rods would be able to handle the power that comes from the tte420, I’m planning on using APR software. Any input would be appreciated!

09Pirelli:
keep the torque low and you'll be fine

swansem:
Thanks, how can I do that? Does APR offer a low and high torque option tunes? Or does that mean I would have to get a custom tune instead?

09Pirelli:
apr cap there torque to around 350ft-lb so you'll be fine

pudding:
You're more likely to break a stock piston before a rod bends tbh. So long as boost onset isn't too aggressive and you have a decent downpipe and exhaust to reduce back pressure, the rods should hold up.

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