Turblown

iTrader: (12)

Here is To4tii's newest dyno sheet:

Ignore the #10 run( the low torque run); I tried to have the dyno operator do a comparison versus the old SSA manifold and his old O turbine wheel and .81 turbine A/R versus my manifold and the new P trim turbine wheel and 1.32 turbine A/R, but for some reason a dyno showed up that I have no idea what its from.

Here are his relevant mods:
Rtek 1.7 ECU: new 550 primaries, new 720cc secondiares walbro 255lph hp and new 5/16 hardline from tank
HKS AIC 2 x 380cc
3.5" downpipe/midpipe to a modified Apex N1 catback
Cold air intake
No ac/ps/clutch fan
Water / Alcohol injection( intake temps start @ 22c and rise to 33C for this run)
Garrett B25 compressor section( 52 to4E basically I believe), P trim turbine wheel, 1.32 divided tang housing
Intake ports open slighly sooner than stock, exhaust is port matched to sleeve
Compression is low ( 60psi even both rotors, all faces)
* worn out drivetrain components are also have been taking a severe beating, making a lot of noise, probably hurting drivetrain losses.

This is an electric chassis dyno. I was told by the owner they have noticed results 10-15% lower than their neighbor shop with a Mustang Dyno, now whether thats true or not I have not confirmed.

Also after 6k rpms when the torque is dropping off pretty hard, we believe the car is being limited badly by the rtek 1.7 ecu's ignition advance, and probably the afm too.

Turblown

iTrader: (12)

Here are a couple of his previous dynos:
The lower torque dyno was:
SSA manifold, downpipe( 3" or 3 1/8") and midpipe to apex n1
B25 with O trim turbine wheel and .81 turbine a/r tang
Rtek 1.7( 550, 720), and a walbro 255 lph hp
afr's were in the 12s

The second run with the midrang torque jump was after
I made a water alcohol injection setup at the shop and street tuned his HKS AIC( 2 x 380cc )
Also fixed his cracked SSA manifold

pistones

iTrader: (5)

at what boost pressure?

jacobcartmill

iTrader: (6)

a 1.32 A/R ptrim hotside? WTF MATE.

t04tii

Wasn't by my choice, more of lack of funds. I got a Garrett Reman center section, with the P trim turbine wheel, and the 1.32 turbine a/r for $200 shipped to my door. It actually works just fine for me, I know how to use my transmission. Those runs were at 15psi.

sleeperfc

umm.... i second the "FTW 1.32!"

i see by your dyno you dont make power till like 6k. when do you see full boost?

RETed

Yeah, how much boost???
Anything under 17psi, and I'll be impressed!

Also, to me, it looks like the turbo is hitting full boost at around 4.5k to 5k RPM's.


-Ted

ilike2eatricers

.

Xbladr

I will be running a similair setup and we will see how it goes for me too but nice numbers that is the kind of number I want to put down when I am all said and done

RETed

Damn, missed that one!
It's almost unbelievable...


-Ted

Turblown

iTrader: (12)

Unfortuneatly the dyno's pressure sensor was acting up, but for what its worth his manual autometer says 5 psi @ 3500rpms, 10psi @ 4k rpms, 15psi @ 4200rpms.

The dyno guys were very impressed also..

Here are some pictures:
https://www.rx7club.com/2nd-generation-specific-1986-1992-17/my-new-turbo-setup-coming-along-pictures-514746/

t04tii

Smoked a modded 06 STI last night

Turblown

iTrader: (12)

I forgot to mention when you see the torque dropping sharply past 6k rpms, boost falls to 14psi...

t04tii

Can this be moved to the dyno section?

chrisandco

i've got one of those manifold's on the way now. too bad yours had to go on a crappy s4. right, nick?

88t2romad

pretty nice, now lets get some pictures of that manifold

Turblown

iTrader: (12)

http://www.nopistons.com/forums/inde...howtopic=60414