EGT probe install and exhaust manifold porting

[jim97gst]

I am getting an EGT gauge in the near future. I read the VFAQ on how to install the probe. I really don't like the idea of letting little metal shards go through my turbo (even at idle) and then possibly clog my cat. The only way to avoid this, as far as I know, is to remove the exhaust manifold. I figured that if I'm going to take it off, I may as well get it ported while it's off. I've got 2 questions:

1. Will it benefit or hurt my stock T25 to have a ported exhaust manifold attached to it? (I already have a 3" turbo back with O2 eliminator)

2. Would it be better to wait until I upgrade my turbo to do the porting to make sure that the exhaust manifold matches the turbine housing? I think (hope) my turbo upgrade will be an AGP L1R. The website says the L1R has a "ported turbine housing" while the L2R comes with a "ported 7 cm or 8 cm turbine housing". Does that mean that the L1R has the same size turbine housing as the T25?

Thanks for any help!

 

[jim97gst]

Anybody?

 

[97GSTURBO]

Porting is always benificial even with the T-too small, just make sure you port it to match your upgrade turbo's housing.

The L1R housing is not the same as the T25. It is MUCH bigger! I think it's a Mitsu 7cm housing.

 

[L2RTSiAWD]

Just port your manifold out to 7cm. That will be fine on the T-25 and when you upgrade.

 

[jim97gst]

Would I have to port the turbo as well in order to avoid having a step where the turbo meets the manifold? Does it even matter that much if I do have a little step?

What do I ask for at the dealer when buying the gasket for after the porting? If I tell them 7 cm gasket will they know what I'm talking about?

Thanks

 

[L2RTSiAWD]

No you have to get the 7cm gasket from RRE or any other DSM dealer.