would love to see a green on a 100% stock engine with basic bolt ons and 93 oct. also maybe a video of that setup from a 2500 rpm hit.

Same here.

I'm not sure what you mean by basic bolt-ons, but I think I have about as few mods as possible (see signature). The only thing I have that you are not asking for is that I run 91octane and an m5 jet with 50% water/50% Meth. That said, I think your results with 93 would be almost identical.

BrettMR made 459 whp/362 ft-lbs of tq at 27 psi and 92 octane : https://www.evolutionm.net/forums/ev...sh-racing.html

Bretts mods are minimal as well, albeit more than mine. I think his exhaust manifold is hurting him too.

As far as me posting videos - I doubt that will happen .

An EvoM Guru?

According to your Mod list your running the Greddy Exhaust. Doesn't that exhaust have 2 tapers, one inside the muffler and the other on the flange that mates to the cat? If so then I wonder if its robbing you of any whp.

I don't believe there is a taper inside the muffler and yes I do believe there is a slight taper after the catalytic converter. I could easily make more hp with a Buschur TBE, but I need it quiet .

You should measure the inside by maybe sticking in a piece of cardboard and trimming as necessary until it slides in to measure it. Thats how I found out the Tanabe Medallion necks down to 2.65" inside the muffler.

Well anyways check this thread out:

https://www.evolutionm.net/forums/ev...eet-video.html

I believe its the Greddy SP2 exhaust that was removed and resulted in 30 whp increase without touching the tune. There is a video clip and real dyno as well.

I remember that thread and just read the first 6 pages again. There seemed to have been some issues with the test, as the claimed 20hp gain was had with a test pipe over a HFC (?). There were other unanswered questions and lots of obfuscation, as well, which generate very little confidence in the process.

No way am I losing 30 whp to another muffled exhaust ....I like to test everything and enjoy data anlysis. But even so, I guess it just speaks to the wonders of this turbo even more .

cij911, sorry for the quick thread-jack, but BluEVOIX, do you mean the Tanabe Medallion Touring?

Yes the Medallion touring. The inside of the muffler necks down to 2.65" . After looking inside with a flashlight I saw there was a taper. So I took a piece of cardboard started with 3" diameter and kept trimming it until it fit in all the way. When I measured the cardboard it was around 2.65".

I measured the ID of my JIC Stainless Exhaust and it was 2.76". Judging from the results I had on my car, I believe that exhaust design and muffler flow properties are more important than the ID with obvious exceptions. I now have a JIC TI Exhaust with 3.14" ID. This is JIC'S stock looking muffler. So, with more piping and a quieter more restrictive muffler the car has definately lost some topend. I have not had it on a dyno yet to confirm this, but it's considerable enough for the butt-dyno pickup.

Sent my turbo to Fp yesterday for conversion to the hta green. Cannot wait! Will get some results up with a review on straight 91 octane pee water as soon as i can!

You will be very very happy....I am now wishing I had a set of GSC S2 cams ...

I will be working (hopefully) on my 91 tune this weekend, so let me know if you need help with your tune.

finally got my tuned last night and it made 400whp and 350wtq @23+psi 91 oct(gsc s2,hta green,basic bolt ons)i love my set up

I will do that sir, I could use some help on the tune to speed things up a bit! I needs to ger to v8 stomping as quickly as possible