Originally Posted by Joe B
Bass,let me know how you make out with the smaller pulley.
Yes,keeping warranty is important.My TRD SC was just replaced under warranty.Seems these units aren't bulletproof as some may think.
The truck is at the dealer now.
also FYI i talked to allan personally and he said that he is good friends with the guy who owns magnison. i am told the guts of the 4.0L SC are the same as is used in the tundra SC. that this unit has held up to 21,000 rpm with no problems. in stock form the sc isnt even breaking a sweat, in fact he said running a 2.5" pulley and with the APR X1 raising the rev limit to 6200 RPM the SC would be turning 16,200 rpm, well within safety limits
he did say that if you go into this territory you definitly need fuel mods. he also said they have seen better than 450 hp with this setup.
i dont plan to go that nuts however i think either the 2.85 pulley ot 2.7 pulley will be fine for me, i need to talk to allan again and see if ill need fuel upgrades with that setup considering i live at 6500 feet ASL