Engine: Stock 1995 BP05
Turbo: T3/T4 8 blade compressor .50AR, .63AR Turbine housing
Manifold: eBay cast iron “tacotaco”
Downpipe: custom 3”
Exhaust Size: custom 3”
Exhaust Components: Catless, mufflerless (for now)
Head: Stock 95 head
Intake: Ebay bar and plate intercooler 27”x9”x2.5”, 2.75” inlet piping with Spectre Air Filter
Engine Management: SpeedyEFI
Boost control: Hallman Pro MBC
Other Spoolin' Helpers/Hurters: TiAL Sport 38mm EWG with 8.7psi spring with dump pipe outside of downpipe
Trans & Diff: 5-Speed with 4.1 Type 1 Torsen
Rear tire size: 195/50r15 (waiting on 15x9 Advanti for my 225 Nitto NT01)

FOURTH GEAR PULL:

RPM - PSI
2220 - -6.6
2274 - 0
2490 - 1.1
2650 - 1.8
2882 - 2.8
3081 - 3.7
3211 - 4.2
3334 - 5
3550 - 6.2
3721 - 7.3
3988 - 9.6
4098 - 10.8
4555 - 11.1
5035 - 11.4
5505 - 11.7
6035 - 11.8
6525 - 12.1

Engine: 1.8 VVT unopened motor
Turbo: EFR 6258 0.64a/r IWG
Manifold: Kraken Low Mount
Downpipe Size/Style: Kraken EFR 3"
Exhaust Size: Kraken 3"
Exhaust Components: Kraken 3" Big Magnaflow. Catless
Intercooler Core Size: Kraken (FMIC JRSpec 550x180x65mm core)
Intake Manifold: Square Top
Headwork: Stock VVT
Engine Management: ME221
Boost Control: EFR EBC
Trans & Diff: 6-speed & 3.636:1
Other Spoolin' Helpers/Hurters: Low Boost EFR can
Tires: 205/45/R16

FIFTH GEAR PULL: (equivalent of a 4th gear pull in a 5-speed car)

RPM Boost(psi)
2002rpm 0.76psi
2030rpm 0.91psi
2078rpm 1.2psi
2117rpm 1.6psi
2207rpm 2.9psi
2301rpm 3.8psi
2420rpm 4.8psi
2528rpm 5.6psi
2633rpm 6.6psi
2751rpm 7.6psi
2849rpm 8.8psi
2960rpm 9.7psi
3079rpm 10.4psi
3168rpm 10.8psi (ended here due to hitting closed loop boost target)

Updating my numbers for my new engine
Engine: “Rods only” VVT engine
Turbo: T3/T4 china 3071 .50AR .63a/r
Manifold: eBay cast iron “taco-taco”
Downpipe: custom 3”
Exhaust Size: custom 3”
Exhaust Components: Catless, Magnaflow 14x6 straight through 3” muffler (ISR imitation)
Head: Stock VVT head
Intake: 2.75” inlet piping with K&N filter
Intercooler: eBay 21x9x2.5
Engine Management: SpeedyEFI
Boost control: Grimmspeed MBC
Other Spoolin' Helpers/Hurters: TiAL Sport 38mm EWG with 8.7psi spring with dump pipe outside of downpipe
Trans & Diff: 5-Speed with 4.1 Type 1 Torsen
Rear tire size: 15x9 with 225/45/15 Nitto NT01

FOURTH GEAR PULL

Rpm: PSI
2097: 1
2491: 2
2855: 3
3100: 4
3300: 5
3441: 6
3570: 7
3690: 8
3761: 9
3851: 10
3921: 11
3994: 12
4062: 13
4100: 14
4150: 15
4217: 16
4266: 17
4346: 18
4413: 19
4500: 20

Engine: '90 B6
Turbo: China gt3076 S13/14 T25/28 flange
Manifold: OBX Top mount
Downpipe Size/Style: 3" hood dump, 90 degree soft bend
Exhaust Size: 3"
Exhaust Components: cast 5 bolt to 3" v-band adapter, 3" v-band shallow 90 bend pipe
Intercooler Core Size: Hyundai Elantra 2.0 intercooler
Intake Manifold: 1990 NA6
Headwork: stock
Engine Management: SpeedyEFI
Other Spoolin' Helpers/Hurters: E85, external wastegate welded to center of manifold/ Reference ran to top and bottom of gate


4th Gear pull: RPM Psi
2480 -1.6
2507 0.4
2625 0.9
2699 1.5
2769 2.0
2803 2.3
2878 2.6
2952 2.8
3079 3.3
3172 3.6
3268 3.8
3330 4.2
3431 4.5
3509 4.8
3627 5.2
3715 5.5
3776 5.8
3832 6.1
3911 6.5
3967 6.8
3989 7.0
4077 7.4
4141 7.8
4231 8.8
4364 9.1
4468 10.0
4535 11.0
4609 11.7
4749 12.3
Test ended due to spark blowout

Engine: '90 1.6 stock
Turbo: VF38
Manifold: Fabricated twin-scroll
Downpipe Size/Style: Bellmouth to 3"
Exhaust Size: 2.5"
Exhaust Components: 2.5" no-name stainless muffler
Intercooler Core Size: 24"x7"x2"
Intake Manifold: stock
Headwork: stock
Engine Management: MS2PNP
Other Spoolin' Helpers/Hurters: wastegate boost, ported internal wastegate


4th Gear pull: RPM KPa PSI
2385 -128 - 3.86
2453 - 133 - 4.59
2508 - 136.6 - 5.11
2587- 141.2 - 5.78
2650 - 143.4 - 6.1
2722 - 144.2 - 6.21
2797 - 145.3 - 7
2865 - 145.9 - 6.46
3252 - 148.3 - 6.81
3673 - 150.3 - 7.1
4375 - 153.8 - 7.6
4610 - 155.9 - 7.9
4823 - 160.4 - 8.56
5018 - 165.6 - 9.31
5305 - 168.5 - 9.73
5562 - 172 - 10.24
5600 176.2 - 10.85
5698 - 180.8 - 11.52
5797 - 185.6 - 12.2
5719 - 190.3 - 12.89
5923 - 196.6 - 13.8
5924 - 200 - 14.3 overboost protection

Before porting the wastegate, overboost protection would be met around 5k rpm.

Engine: Built 1.9L BP05
Turbo: Precision 4828 (Similar to GTX2860R)
Manifold: Old BEGi Cast
Downpipe: Artech Divorced Flow 3"
Exhaust Size: Custom 3”
Exhaust Components: Catless, Resonated, Muffled
Head: 95 head, Supertech heavy doubles, Supertech +1mm inconel exhaust valve.
Bottom End: Supertech 8.6:1 pistons, Eagle rods, 1mm overbore
Intake: Ebay bar and plate intercooler, FM intake kit, FM intercooler piping.
Engine Management: MSLabs MS3 Basic
Boost control: MAC Closed-Loop EBC
Other Spoolin' Helpers/Hurters: Only street tuned, fairly tame ignition timing for safety, 8.6:1 CR, ~70* ambient temp, ~300ft elevation (Iowa)
Trans & Diff: 5-Speed with 3.636 Torsen
Rear tire size: 195/45r15 300TW Yokohama S-Drive (death trap)

FOURTH GEAR PULL:

RPM - PSI
2099 - -1.1
2212 - 0.8
2302 - 2.2
2405 - 3.3
2512 - 4.3
2605 - 5.6
2721 - 7
2804 - 8.3
2933 - 10.5
3033 - 12.4
3139 - 15.5
3245 - 17.2

Evidence:
https://cimg9.ibsrv.net/gimg/www.mia...ba526d555c.png
Evidence

Well done. Great numbers. 3.6 with the 5 spd should space the power out nicely.

Engine:2001 1.8L 8.1:1 CR, w/ functional VVT
Turbo: 80 Series TD05 with billet compressor wheel. Journal bearing
Manifold: Mitsubishi evo 4 standard cast manifold
Downpipe: 3"
Exhaust Size: 3"
Exhaust Components: Custom DP into modified Kraken 3" system
Intercooler Core Size: Standard Mitsubish evo 7 cooler, full 2.50" piping
Intake Manifold: 1.8 VVT Flat top
Headwork:Mild Porting, +1mm exhaust valves, std VVT cams
Engine Management: Haltech
Other Spoolin' Helpers/Hurters: 13 psi of wastegate spring. No additional EBC duty strategy over the c.22.6% duty cycle required on the 3 port Mac valve to make 21psi used for spool assist. Full Mitsubishi twinscroll right through divided internal wastegate.
Trans & Rear End Ratio: 6 speed, 3.6
Rear tire size: 205/45R16

Fifth gear 1:1 on std 6 speed:

RPM PSI
2200 2.4
2300 4.9
2400 7.3
2500 9.7
2600 12.1
2700 15.0
2800 17.6
2900 19.7
3000 21

https://cimg5.ibsrv.net/gimg/www.mia...4b6043f6ec.png

Engine: Stock 1997 BP
Turbo: Pulsar PTX2860R gen 2 .64AR IWG Turbine housing
Manifold: Kraken low-mount
Downpipe: Kraken 3”
Exhaust Size: Kraken 3”
Exhaust Components: Kraken 3" cat + resonator + muffler
Head: Stock 97 head
Intake: Kraken 7inch intercooler + filter
Engine Management: UA4C Speeduino
Boost control: 34B Chinese Mac valve
Other Spoolin' Helpers/Hurters: -
Trans & Diff: 5-Speed with 4.1 Torsen
Rear tire size: 185/60r14

FOURTH GEAR PULL

RPM - PSI
1531 - 0
1649 - 0.79
1746 - 1.13
1942 - 2.36
2050 - 2.79
2153 - 3.58
2249 - 4.28
2350 - 4.66
2463 - 5.54
2558 - 5.93
2667 - 6.86
2746 - 7.72
2846 - 8.48
2930 - 9.03 - target boost
3052 - 9.29
3170 - 9.47
https://cimg8.ibsrv.net/gimg/www.mia...3bcc34b919.png

Pardon if I am misreading, but you are making 21 PSI at 3200 RPM with a 13 PSI wastegate and no EBC?

I would read that as he is using EBC but not to assist low RPM spool, just to maintain target boost which im guessing is around 21

then again, I'm wrong as often as I am right

This is correct^ . The EBC is utilising the base duty cycle required for 21 psi at steady state to bring it up on boost = 22.6% Duty cycle.

I could use an EBC spool assist strategy of 100% DC say up to 15psi and my spool would be materially earlier. But I don't like the feel of it on part throttle. I prefer to have a boost by TPS correction and a more linear power delivery through the throttle. Spool assist strategies can mess this up and the turbo comes on like a nitrous button in the transient boost areas. In and out.

I'll do the spool assist for a laugh to see what the result is and post it but its not representative of my preferred setup.

I feel the exact same, I can modulate power so much better running wastegate and the extra couple of hundred RPMS down low arent worth it to me -- up top, full throttle EBC to raise from 15 to 18+

Woooo buddy - 21 psi at 3000rpm - don't short change me 200 hard earned rpm :nono::D