I tuned a car to around 280 whp at 18 PSI on pure 90 octane with no cams only 2.75" down pipe, hks uicp, hks licp and hks intake.


I am guessing you should be in 300-310 whp range

 

2005 8 Turbo with the 10.5 hotside are nicer also Evo 5/6 turbo they also have the 10.5 hotside.

However you can still squeeze around 330-340 on 91 on your set up im sure.

 

Just got my car tuned at RRE

04 evo 8 105k

9turbo
hks 262/273 cams
720cc
testpipe
downpipe
3inch exhaust
injen intercooler pipes
walbro 255

23psi
330whp
320tq
...
not sure how mu h more power I could have made out of the 9 turbo with more boost.

 

91 octane...2.4l 4g64, stock cams, stock 9.8cm turbo.. bolt ons.. makes 275whp VD @ 6600ft elevation. It has a nice mid range but just seriously runs out of breathe w/ stock cams/turbo. Set it to 23psi, tapers to 17-18 up top (6500rpms). Can't get more out of it up this high, and the JE pistons w/ lots of slap just seem to like to knock with much timing. (1 degree at 4000, 12 at 6000 is all it will take).

HKS 272's on the way now, and then I'll pick a turbo. Probably going to go decently big on the turbo even though my goals are low (350-370whp). Like an EF3, FP red or black, 3076r etc. Should do it on pump without too much trouble though.

 

that's really good! i did the same on my IX with the same mods and 264 Tomei cams.

 

what power did you make? And psi?
I feel I should have made more

 

333/345. I don't remember the psi, though. It was pretty conservative and i couldn't log boost back then. i want to say it was something like 23psi tapering to 18-19.. but i'm not sure.
if you had no taper, i'd say that's about right for an VIII on 91 with the IX turbo.

 

Curious what results others are getting through a cat? I'm having a terrible time making clean power (no knock) through a 200-cell ceramic HFC. I'll get a couple counts in the mid range no matter how low the timing, and then by ~6k it's all over with lots of knock. 22psi tapering to 20. Load peaks at 255 so I'm not even making much power.

'04 Evo8, stk intake, HKS 7460, ETS 3" & pipes, 9DV, TX-264, stk injectors, 255 pump, o2, DP, HFC, 3" exhaust...

Next on my list is to troubleshoot:
- Log crankcase pressure
- Disable EGR to see if it's leaking
- Injectors?

There are no boost leaks.

 

Never mind.

 

Taper to 20psi

You have cams also

 

yes. Tomei 264 easy cam. helped a ton on the low and mid range. not so much for peak power, though. in fact.. i think peak WHP was only up about 30. very mild cam, but sure was a lot of fun.

 

Oh nice.

ya Rick at rre said the hks cams are super mild cams.

but I was seeing other threads of people with like 350whp but it was at higher psi 25+ and 93.

so 330 is good for me then lol

 

Very good!

 

Stock engine except for kelford 272 cams.
Walbro 255 in tank
Fuel injector clinic 1250cc injectors
4" unknown intercooler.
Injen hard pipes.
Unknown downpipe to litespec exhaust with test pipe and non fouler
26 psi
91 oct
toxicfab tubular manifold and on dump (was recently done, not original for my tune)

my car made 355 hp 350 tq and also has been gsr 5 speed swapped.

I really want to bump up the power to around 450. Maybe even 500.

 

Wow awesome