Initially had the .86 rear housing with the 7164 and while it made ok numbers it was lazy. After installing a back pressure sensor in the up pipe it was clear the turbo was experiencing choke flow. A 1.03 Tial rear housing was ordered as well as a 3.5" dump pipe was fabricated...And what a difference it made! Like a different car to drive . Low rpm and transition onto boost is great and the thing just pulls hard on boost
Graph below is .86 rear 3" dump pipe std inlet manifold vs 1.03 rear, 3.5" dump pipe and Cosworth inlet manifold....same boost
Depends how you look at it. Boost at a given IT? No gain. Thats not what it is about.
But it should gets you a few degrees more cooling and that could justify a tiny bit of boost as a side benefit.
You do it over a FMIC to get the performance of a FMIC, with the volume of a TMIC - at least that's why I want to do it. So it's about response.
You also kill heat soak from low airflow at low speeds.
These Plazmaman water to air cores are far superior to a stock item. This core is rated to 1000hp and they have an off the shelf kit with a 700hp rated core for stock location turbos. I went this route for a couple of reasons, 1) is the short pipe length for increased spool and 2) retain factory rebar/crashbar for insurance purposes. As for boost levels this intercooler has seen 30psi and almost 600whp and coped no problem.
Thermocouples arrived today. Just waiting on my Motec E888 to arrive and I'll wire it up and mount next to the ecu. Going tools stage my fuel pumps and set up the Magnus Motorsport launch control/clutch release valve as well. Also toying with the idea of a rotary toggle for multiple boost setting. Still waiting for my BNM headers to arrive which can't be helped with the restrictions due to the pandemic...
Had the BNM header ceramic coated and installed the other day along with thermocouples for individual cylinder get. Absolutely amazing fitment and build quality from Evan! Still have to wire up the Motec e888 before car goes back for a tune touch up. Without tuning the car feels AMAZING!!! So smooth, boost comes on much quicker, more linear linear and it's quieter with no rasp
My name is Idin (pronounced like Eye-din).
I always knew Imprezas through the original Legacy and GC Impreza 555 rally cars but my favourite car was Lancia Delta Integrale HFs. That was until I started semi competitive PC rally gaming and came across THE blue car with a different sound...
Figured this was is a good place to make an introduction and also post what our company BROSPEED and Bro Tunes is up to. We named it BROSPEED because we treat all of our customers like brothers and friends. To us it seemed like tuning has gotten away from unique builds, making friends, and...
June 12, 2003 first fuel fill up:
Delivery image link =>
Image of Lucille on delivery day getting fuel. June 2003
2004 Blue STi
New Name "Lucille" after the Frank Zappa song of the same name...
#3 3" Downpipe dent to clear steering linkage in tight lefthanders
#7 Studio Pictures
#11 2 Laps Video at the Hockenheimring
#13 Turn 2 and 3 at the Hockenheimring (Full Videos!)
#15 NUERBURGRING Pictures
#24 Hockenheimring Pictures
#28 Oil Cooler mounted...