My 88 Part List

[Grandavi]

Originally Posted by TheMark3

OK - but I don't think the CT26 turbo will bolt to that manifold as it does not mount to a T4 flange that I have ever heard of. So you would use - an adapter? Then exiting the turbo you likely will have alignment issues. If you do change the location of the exit from the turbo - then I would not waste money on the downpipe as you will probably wind up butchering it. I am just wondering about the need for the manifold at all - unless you are planning 10s in the quarter mile or something. Without the manifold the rest all makes perfect sense.

Ahh, this is the first I have heard of what you are saying. The whole problem is I am reading a lot of bits and pieces of information and trying to follow it without any real hands-on. Therefore I may be confused (which is why I posted this in the first place ). Originally I was against upgrading my turbo, but after reading as much as I can and talking to various people, I am thinking I may have to upgrade it as well as do some other modifications I did not plan on (which I am still trying to hammer out prior to posting more here so I dont confuse the people I am hoping will "unconfuse" me!).

My plan is to try to get as close to 300 HP as possible without going too far from stock or without putting too much pressure on the engine. However, after 2 weeks of studying this (and I may still be incorrect), it seems that there is a "jump point" from approx. 250HP max stock to 450 HP modified. I dont think there is any true middle ground.

The intention of the exhaust manifold or getting a tuned header was to do a simple bolt on improvement as I have read (again.. this is not "hands-on" knowledge, so I am searching for confirmation) that the stock manifold has some issues with backflow due to poor or improper design.

Now... at the risk of doing a text wall, I have found that if I increase an 88 Supra 7MGTE exhaust to 3", the I may be sacrificing low end torque for high end torque (meaning slow at the start, fast at the finish). This isn't what I intend to do at all. So... to sum it up, I will just state what I am trying to accomplish.

My entire "vision" is to have this engine running at top performance with approx. 300-325 HP and doing it as close to perfectly as possible. There are no limitations on the $$ side to achieve this, Im just hoping to do it smartly without spending too much money (isn't that what we all try for?). This car will be my daily driver so economy is a consideration although if I have to sacrifice some fuel for performance.. than so be it!

This exhaust manifold may indeed be wrong for the entire set up as I have learned much more than when I originally posted it. I'm thinking I may have read too much, so am mixing projects up in my tiny brain and cross referencing wrong so that is why I myself may be wrong on my selection.

If you have know of a post here or have information that can steer me right, I would greatly appreciate it. This all ties into having a 3" exhaust to eliminate backpressure.