Wheelspk

hello,

i have a evo 8 that is going to be tuned soon.
engine has the following parts:

o ring'd block
wisco 9:1 pistons
manley TT i beam rods
625+ head studs
evo 9 head gasket
ams oil pan
sparktech cdi system
aem ems v2
2 10an lines from head to vented catch can.
on speed density with 3" intake.
3 inch greddy intercooler with 2.5 " upper and lower piping
tial external waste gate with 14psi springs (black and red)
tial bov
koyo rad evo 6 radiator
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head:
non ported head with oem valves
s2 cams
gsc springs and ti retainers
kiggle hla

fuel system includes :
twin 450's by BPR
1650 fic injectors
8an feed 6 an return

turbo :
JB fp red ss
fp mainfold
fp turbo housing.
3 inch down pipe
3.5 inch kakimoto exhaust with straight piping from down pipe till muffler.

my question is what about of boost should i run the fp red to making close too 550- 600 whp on e85 efficiently and NOT making the engine hot with high EGT's on max boost and keeping the turbo also happy
or am i asking too much from the fp red when i say 550-600 whp

thanks
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Abacus

iTrader: (9)

Yes, I've run this turbo and housings for years. You can spike it harder on the low and midrange but it will taper out the top.

https://www.evolutionm.net/forums/ev...g-results.html

On a dynojet with an MHI housing 585-600whp takes 32psi or so on E85.
The SS housing should make 40-50whp+ more at that same boost out the top.

32psi at 7600-8000 was about as much it liked on my setup with a Tomei DP and exhaust. On E85 with proper tuning that should be fine for non road course abuse. By looking at the VE map, timing, boost and dyno graph you should be able to tell how much boost you want to leave it on.

I have 4 boost settings in that car on a trim switch . Pump gas is low ethanol content and 21psi. Anything over E75 I can choose between 25,30,32 and a spike to 36 and taper to 32. Timing changes slightly from E75-E90.

Wheelspk

just the answer i was lookong for i will be tuning im a couple of days... my aim is too hit somewhere btw 31 to 32 psi and make btw 550 - 580whp

that being said i dont know what difference my 2.0 9:1 compression would make compaired to your 2.2. with 10 compression.

Abacus

iTrader: (9)

Some difference there but you should still be able to break 550whp on a dynojet easy. I made 617whp on my stock 2.0. It was in ideal conditions and on good fuel 50/50 E85 and C16.

Wheelspk

thats would be amazing. will report back once this thing is tuned.

schuhie

Your setup is similar to mine but you have the SS housing and a lower compression motor. I make right about 580-600 on a red now at about 35-26 psi spike at 4500rpm and tapering to about 32psi by 8000rpm.
With the stainless housing; like Abacus said, I would expect you to be able to hold a few more psi up top and make over 600.

Wheelspk

hi how did u connect the pipes from wg too turbo and boost solenoid?.
when i hooked mine it over boosted but when i gave gate pressure boost was what was correct according to spring... how did u plumb your lines?

schuhie

I have an MHI housing so its internally gated but its the same idea. I have my boost reference pulled off the J-pipe off the turbo, to a 3 port boost control solenoid and then to the wastegate.
I run the GM 3-port so I use so like at this link.
https://www.evolutionm.net/forums/ec...ml#post5660901

Wheelspk

hey so you used the top picture correct?

schuhie

I used the bottom picture. I am running the GM solenoid, not the MAC-style. But I only have 1 port on my gate so I have one of them VTA.

Wheelspk

i dont have fitting on my intake so i dont know how to use the bottom pic... but my looking at both they both look like they doing the same??

schuhie

The one to the intake can be VTA if you are on speed density. Yea, the one with the valve hooked to both ports on the gate allows for more accurate boost control generally.