I am looking into a N/A Tc. I alreadyhave the trd exhaust, which I paln on matin with a TRD intake, and ZPI s-pipe. Any other recommendations are welcome and needed as you should know about the products you own. What are the best types of header. I donot want any buzz. Also has anyone installed a stage 1 head from zpi. I am curious about these. Any good brand of Hiogh compression pistons for th 2-az. ANy insight on these products would be appreciated

 

Intake and exhaust from TRD won't yield much. Less than 10 HP. If you get a header, you'll need a good resonator to reduce rasp (buzz). Higher compression pistons may force you to run higher octane which is obviously expensive right now. Look into transmission mods (if you have a 5 speed). A real set of tires will help you send more of the power to the ground too.

 

The TRD exhaust is getting you nothing really. I have it as well and love the sound. An intake will be in the same boat. You MAY gain a couple of hp (the manufacturer claims do not reflect real world numbers once the ECU relearns) and that will be over a tiny part of the band.. you wont notice any gain from that.. but again, they sound nice.

To complete your exhaust (the TRD is only an axleback) you could get the rest of a catback made for it, buy a good header and then a monster resonator as mentioned and go with that. Realistically you still most likely will only gain a small amount once the car stops running lean (which is why the dynos right after the install of an intake and similar parts seem so high.. most of the time the AF is towards the lean side for a while).

If you want to really push the NA thing, buy a salvaged block, have it re-sleeved so you can bore it and have them punch it to a 2.6L. Have a good machine shop do it that is smart enough to tell you what will be a good safe max for the boring.. but I hear 2.6 is safely attainable once it is resleeved.

Next, get some 11:1 pistons, port and polish the head and get some fuel management going.

I honestly cant say how much power you are going to gain, but it should make it a fun little car in the end. But that is a lot of dinero in the end. However, as much as some will argue the dollar per horsepower advantage of FI, I think a solid NA build would be a fun project. IF someone wants a serious bang for your buck track car.. the FWD 4 banger is the wrong choice to start with. So if NA is what you want, go for it. I think it would be a fun project.

 

I plan on a stage two head, 11:1 pistons, ARP head studs, tdr intake, and probably a DC sports header. A 30 in res. will suffice to cure the buzz I am sure. High flow cats will be put in my ZPI mid pipe, and then I will also have the S-pipe. Crank pulley, Quaife diff., and probably an E-manage. With that set-up, I will be able to rev into the7600 range with no issue. And as far as the salvage block idea, I like that idea. I am going to look into it. Do you know anyone/where to get one of these without getting bootyraped $$$$$wise? Thanks for the help.

 

The crank pulley wont gain you any power (contrary to some physics ignoring strangely amazing dynos put out by manufacturers) really but will help you spin it up a little faster.. I personally would not THINK of putting one on my car, but I wont start that argument here. If you want more info I will gladly provide you links for other forums as well as info from dinan, ati, etc about them.

Since you are going to have the tranny out anyway. Skip the pulley and buy a fidanza flywheel. A LOT more effect and much safer on the system way down the road. With either though , you are removing rotational mass, which will decrease the engines momentum once you reach a static RPM, but allows it to rev faster. So it is a trade off, but from what I hear on this car it is worth it (the fidanza).

As far as the block, I have heard of people finding long blocks on here for under $1000. I see them on car-part.com for anywhere from $750 to $2500 depending on mileage. If you resleeved it the mileage would not mean quite as much. Those are long blocks, so you would have the head to swap out for core on the stage 2 head and all. You could get the whole thing ready and built while still driving yours. Then do the LSD, while you were swapping them.

I would also reccomend swapping the clutch while you were in there. The stock is ok for normal use, but I would spend a little more and do it while you already had everything apart.

I am guessing that with what you are doing you will gain about 30 - 35whp in the end possibly. But that is a rough guess. Doing it NA should make for a nice power curve, which is really what you are looking for other than the peak number. But hey.. since you may get another block.. may as well spend a little more and get it sleeved and bored Isnt it great how one spend leads to another?

 

along with a strong power curve, I will be able to rev into the mid 7k's and that will be quite an advantage over a stock, boosted, tc. Also, I plan on doing quite a bit of plug and play with the greddy ultimate. I am looking into the block right now and I can bore it to 2.6l safely. I will up the injectors to 550. This is gonna be a seriously fun project, that should make for a fun car in the end. I think that it will surprise a lot of boosted drivers in the long run. Thanks for the help and I would appreciate any more help/links that you could provide.