Upgrading my turbo...

[akeem1003]

Yo, wazzup guys.

Pretty soon, I will be installing a custom turbo kit on my msp. This kit will consist of a Turbonetics T3/T4E turbo, OBX Exhaust manifold, custom downpipe, 440cc injectors, and the Split-Second AFC.

My current mods consist of a custom FMIC setup, custom 3" downpipe-back exhaust, HKS SS BOV, and a greddy profec type s EBC.

My question is how many psi would I be able to run after I install the turbo kit?

 

[orng1]

its the internals that you have to worry about. The rods are too weak for bigger boost, but I still run my T3 at around 9-10psi. Get rid of the stock rods and you should be good.

 

[akeem1003]

What type of setup do you run with that T3. fuel? exhaust?

 

[orng1]

I'm still running my stock ECU even though I know I shouldn't. I'll have the MPI tuner as soon as I can figure it out, I can't have any down time with my car right now so I had to take it back out to get my car running. I had issues with the install. I have a full DP back 3" exhaust and it's a spool turbo kit. I traded my msp set up and some money for it.

 

[akeem1003]

What about the fuel? You still using the stock injectors?

 

[orng1]

Yeah I'm still running it as if it were stock. The stock map has been pretty good as it runs way too rich for the stock turbo. As I go higher in the RPM's at full boost it will tend to lean out so I need to becareful. I still have the MPI that I need to install and that will take care of me at higher boost at least up to 11-12 psi but I will be able to make more power as it takes care of ignition as well.

 

[akeem1003]

I just want to run about 9psi for now so the split-second afc should take care of me for now.

 

[orng1]

9psi doesn't sound like you need a turbo upgrade just yet. I had been running my stock set up at around that and had no issues. I have bigger plans for my car and I needed to go bigger turbo to run the boost that I was looking for.

 

[akeem1003]

9psi on the T3/T4 will make a difference from 9psi on the stock. I have to replace the stock one anyway cuz it's on its last leg. it's burning off alot of oil.

 

[otmsp]

what does a obx mani look like?

 

[akeem1003]

http://mazda3online.web.aplus.net/product_info.php?products_id=576

its on that site

 

[sandspeed]

The t3/t4 turbo you are going to be using flows a lot more air than the stock msp turbo so you won't need to run a lot of boost to make good power. The AFC should be perfectly good for altering afr's to help cure the rich tune from the factory. I have one on my car and it runs nicely, but I still intend on making a new map that is better than the stock AFC map using the stock injectors or maybe 440s.

 

[akeem1003]

Thanks. Now I just have to get a reply from hiboost about their T3 exhaust manifold.

 

[jestermsp]

9psi on the T3/T4 will make a difference from 9psi on the stock. I have to replace the stock one anyway cuz it's on its last leg. it's burning off alot of oil.

just an fyi. 9psi on a t3/t4 is like 13 psi on the stock turbo. on the stock block thats askin 4 it. even with a good tune it will blow up. maybe not as soon as you do it but give it a few months to a year.