2006EvoIXer

iTrader: (1)

I think he wanted to know if you got GSC 5040 or 5041 springs.
As for O2 housing, I think it would be easier on engine to reduce that back pressure with an upgrade and then tune it down even more. This part is so cheap and easy to install oh well.

Update: I just looked at you dyno graph again and see that your stock O2 is keeping your low end spool down more than my HFC. Something to think about to go along with your fuel upgrades.

4G63Rules

iTrader: (10)

Glad to see the HTA71 showing great results. I'll be pushing an HTA71 myself with a 2.4L, Walbro 450, 1650's, Jun264 cams, ATS triple carbon clutch, lots of STM goodies, & E85 in my Evo IV. Also converted to a full VIII longblock as well. Can't wait to have mine done. Car has been down since April 2017.

lonestarr20

Hey Minus, what do you predict your setup would output if you had a double pumper, 2150's, S3 cams, 65mm TB, and a ported intake manifold ?

2006EvoIXer

iTrader: (1)

Double pumper and 2150cc injectors are overkill for HTA 71. Doubt you'll make much more than 500 hp. If you have that much fuel, you should be looking at FP Black or bigger.

lonestarr20

Will it make 500 ??

2006EvoIXer

iTrader: (1)

If you don't mind, can you post a video of your engine running at idle? Mine is constantly hunting and idle is lumpy. I'm curious if your engine is smoother from the smaller injectors. Thanks!

2006EvoIXer

iTrader: (1)

I think it will with test pipe and full bolt ons. If you stick with single fuel pump, a rewire is a must. I'm planning to test different rewiring options to understand which helps the most so others can get the best bang for the buck.

2006EvoIXer

iTrader: (1)

I will always have a cat, so I won't reach 500, but I'll still try!

Project_Broke

iTrader: (2)

I'm at 445whp/370tq on 25lbs (wastegate) with an unfinished SD Tune.

Hope to inch closer to 500whp, but I'm sure I'll run out of injector (1120's).

lonestarr20

What's your setup

Project_Broke

iTrader: (2)

FP71
GSC S3's with Springs
DNP Mani
Griffin Intercooler
Muse LICP/UICP
AEM 320 E85 Pump
Tanabe Medalion Exhaust
4 inch SD intake
Tial Q
E85

Have some part throttle knock plaguing me currently. Trying to get that ironed out, timing is super conservative right now.

2006EvoIXer

iTrader: (1)

Have you rewired your fuel pump? If not, you'll run out of fuel around 460 whp.

Project_Broke

iTrader: (2)

No, it's stock wiring.

Barnhill's VD shows 466whp. I'm quoting evoscan, which is lower.

12.1 all the way to redline, I'll push it until the AFRs start leaning out.

MinusPrevious

iTrader: (3)

A blown bottom end My end game is some level of reliability w/out over stressing the crank & rods.

Bigger injectors, more boost, bigger pump & it would have been close

2006EvoIXer

iTrader: (1)

Don't just watch your AFR. Watch your IDC too. Personally, I feel that anything over 95% is pushing it much because cold nights will runs injectors over 100%. I'm not even sure if it is possible to run over 100%. My taeget is to run 90% IDC max because my tune at 99% ended up 104% at night where temps are 20 degrees lower I think it was mid 50s that night). What if it was 40s or 30s? Scary thought.