This Turbo kit has been designed to use the factory exhaust flange, so you can use you existing 3 inch dump pipe if you already have one.
Upgrading your factory intercooler is important if you are looking to run more than that 13-15psi of boost, however which intercooler to choose depends on a couple of things.
If you intend on towing a large load, live in a hot arid climate or decide to run a larger turbo option, then we suggest you should run our series 2 intercoolers as they are bigger and capable of a larger volume of air with a higher thermal efficiency operating at these more aggressive conditions.
Below is a link to the 2 intercoolers offered in this kit so you can make an informed decision on which combination is right for you.
The turbocharger that is supplied as the base option for the 100 series 1HD-FTE turbo kit is the GTX2967R by Garrett.
We have found that this turbocharger compliments the characteristics of the 4.2ltr 1HD-FTE motor very well. Combining a fast spool rate with reliable power and substantial torque we feel like this option will satisfy 90% of customers looking for better towing capability, highway speed and general 4wding application.
Should you be looking for a little more power, torque and performance the next step up from Garretts GTX2967R series is the GTX2971R series. These turbos move some serious air speed and are capable of running from 20-30psi all day. Not only are they capable of higher boost application, hold boost longer, have a billet compressor wheel and anti-surge slots meaning Better performance across the board.