t2 housings n/a internals

[vex]

Originally Posted by GtoRx7

Hey this is Logan, I was linked by low impedance. Its always a large debate on 6-port vs. 4-port n/a. I personally feel the 4 port is the way of making power easily, and cheaply. The irons are not expensive, and a used standalone is very cheap as well. Here is my setup of the RE-
Stock upper and lower intake manifold from the 13b-re. Medium sized port, S5 rotors, not ideal header at the time. 1st gen distributer, haltech F10a fuel only computer, 3" k+n filter. MSD box, with second gen coil for leading. Electric fan. 206rwhp with 152rwtq. The power under the curve is great, making more torque at even 1500rpm than a stock GSL-SE. If you guys have any other questions, let me know. I like the forum, so I will be hanging around now

I'm a little curious about your setup, your running a fuel computer and an MSD ignition, what are your injector/pump sizes? Are you running S5 NA rotors? I ask as I'm curious to know if this is indicitive of the tune or if it's other modifications (including the port job/irons/housings). If it's more indicitive of the tune then that's saying something about the stock NA engines and how much power might be available to them with a standalone.

[GtoRx7]

Originally Posted by vex

I'm a little curious about your setup, your running a fuel computer and an MSD ignition, what are your injector/pump sizes? Are you running S5 NA rotors? I ask as I'm curious to know if this is indicitive of the tune or if it's other modifications (including the port job/irons/housings). If it's more indicitive of the tune then that's saying something about the stock NA engines and how much power might be available to them with a standalone.

I am using the 550cc injectors that came with the RE engine. But I dont really count injector size helping with power. Even the 460cc injectors will support enough Hp in n/a form, possibly make more power from the SMALLER injectors, but that is another subject. The fuel pump was upgraded to a msd/walbro style, the stock GSL-SE pump was "almost" there. I did install Series 5 n/a rotors. I would really like to have direct ignition that the FC has stock, as that alone would possibly net 5+ rwhp or more. But I built it on a very tight string budget, and got the old F10a haltech for $100. Its hard for me to plunk down $1k on this car for ignition control .

I know for a fact that a S5 n/a 6-port will not gain 50-60rwhp from a standalone install. I would love to think so, but its not possible. The AFM is not super restrictive, a loss of 5-10hp is pretty realistic. Tuning and timing will net another 10-20 or so. I would love for someone with a 6-port to prove me wrong, but they require so much work to get there. The 4 port of any type produces 180+rwhp with so little work. And its hard to make less than 170rwhp even with a stock exhaust mani, and 9.0:1 rotors. In my opinion the 6-port just cant do this.

[vex]

Originally Posted by GtoRx7

I am using the 550cc injectors that came with the RE engine. But I dont really count injector size helping with power. Even the 460cc injectors will support enough Hp in n/a form, possibly make more power from the SMALLER injectors, but that is another subject. The fuel pump was upgraded to a msd/walbro style, the stock GSL-SE pump was "almost" there. I did install Series 5 n/a rotors. I would really like to have direct ignition that the FC has stock, as that alone would possibly net 5+ rwhp or more. But I built it on a very tight string budget, and got the old F10a haltech for $100. Its hard for me to plunk down $1k on this car for ignition control .

I know for a fact that a S5 n/a 6-port will not gain 50-60rwhp from a standalone install. I would love to think so, but its not possible. The AFM is not super restrictive, a loss of 5-10hp is pretty realistic. Tuning and timing will net another 10-20 or so. I would love for someone with a 6-port to prove me wrong, but they require so much work to get there. The 4 port of any type produces 180+rwhp with so little work. And its hard to make less than 170rwhp even with a stock exhaust mani, and 9.0:1 rotors. In my opinion the 6-port just cant do this.

It seems a little odd that Mazda would invest time and money into a system that was less capable when a 4-port can make more power and better torque throughout the RPM band. You'd think that they would have had this information upfront and saved time and money with only producing one set of housings. Seems completely counter intuitive. Guess I should pick up an RTek V2 and see what I can get the stock system up to...