Quote:
Originally Posted by barretp
FI noob here. What are the pros and cons of a TT set up vs this one?
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Here's a start of a list for you. Some of the items listed below are my opinion and not necessarily FACT. I won't point out which ones. I'll let the guys debate...
BP
Pros:
- You can install it in your garage on jack stands
- A single turbo makes more torque than a TT
- With a twin scroll divided housing you hardly notice any spool difference
- Everything you need, except a basic tool set, is included with the purchase of the kit
- Pulling the turbo is pretty simple and can be done in less than an hour, probably more like 30 mins
Cons:
- A scavenge pump is required since turbo sits at the same level as the oil pan so gravity draining is not possible
- Turbo is low
- The secondary PCV system is vented causing a slight hiccup in the idle when coming to a complete stop.
- Only available for MT
- Have to drop the turbo cross piping to change the tranny fluid (highly recommend adding a transmission fluid change at time of install. Use synthetic so you don't have to worry about it for awhile)
TT
Pros:
- Turbos are located like the factory would have installed them
- No scavenge pump cuz the turbos gravity feed
- Power curve is likely slightly easier on the engine than the ST because the torque comes on a little more gradually
- Keeps the stock PCV system
- Transmission type doesn't matter, the kit will fit. (assumes you ignore the power restrictions the AT has without serious upgrades)
Cons:
- Basically have to drop the motor to install
- Unlike the BP kit, most people will need a shop to install the TT
- Won't come with everything to install
- Turbo upgrade requires you to drop the motor again