Engine: '97 1.8l in a ’90 body
Turbo: CX GT25 Churbo (1yr and kickin’)
Manifold: Tubular CX
Downpipe Size/Style: Custom 2.5>3"
Exhaust Size: 3" straight back through the famous 5x22x11 Mag
Intercooler Core Size: 12x24x2.5
Intake Manifold: Stock
Headwork: none
Engine Management: MSPNP 1
Rear tire size: 205/45R16
Other helpers/hurters: Boost creep and clutch slip around 5k

Fourth Gear Pull...

RPM: MAP:
2500 -8.9psi
2550 -3.1psi
2600 0.1psi
2650 2.2psi
2700 4.3psi
2750 5.0psi
2800 6.4psi
2850 7.3psi
2900 6.9psi
2950 7.1psi
3000 7.1psi
3050 7.1psi
3100 7.6psi
3150 7.8psi
...and on through the range....

Alright. After my last post, and suggestions that something was amiss, I adjusted the wastegate and it made a huge difference. Retuned as well, added a little timing, and here's what I came up with. Probably the best I'm going to see with this shitty manifold and dp. Also, swapped in a 4.1 Torsen since then, as noted.

Using a Hallman manual boost controller.

Engine: '92 1.6L
Turbo: EvoIII 16g (Genuine Mitsubishi TD05H)
Manifold: eBay/OBX log
Downpipe Size/Style: eBay/OBX 2.5"
Exhaust Size: 2.5"
Exhaust Components: No cat, 14x9 Magnaflow
Intercooler Core Size: 19x10x2.5"
Intake Manifold: Stock
Headwork: Nope
Engine Management: Galant VR4 ecu & ECMLink in speed density
Other Spoolin' Helpers/Hurters: Ummm...eBay manifold and dp
Trans & Rear End Ratio: Stock 5-speed/4.1
Rear tire size: 205/50-15

4th Gear Pull

1736 0.2psi
1853 0.5
1961 0.7
2066 0.7
2159 0.9
2267 1.2
2351 1.4
2470 1.7
2556 1.9
2665 2.1
2761 2.4
2863 2.8
2971 3.3
3056 3.5
3154 4.2
3252 4.7
3351 5.4
3463 6.4
3571 7.5
3659 8.9
3750 10.3
3846 11.5
3952 12.9
4063 14.1
4153 14.8
4247 14.8
...

>> Old data below for comparison...thanks for suggesting my shiz wasn't right guys! Now I'm at full boost by the time I was making 2.5psi back then :loser:

3444 0.1
3544 0.4
3655 0.6
3754 1.3
3854 1.3
3955 1.5
4045 1.8
4144 2.5
4257 3.2
4366 4.4
4454 5.5
4551 6.7
4641 7.9
4741 8.8
4864 10.2
4954 10.9
5054 11.7
5137 11.9
5245 11.2
5350 11.2
5372 11.4
5466 11.4
5597 11.4

Finally got my exhaust leak fixed. Had the boost turned down today but this should give you a good trend line.

Engine: 1998 FE3 (Kia Sportage) 2.0L
Turbo: Borg Warner EFR6258
Manifold: DIY Octopus long tube.
Downpipe DIY 3"
Exhaust Size: 3"
Exhaust Components: No Cat, 15"x 8" Magnaflow and 36" Magnaflow
Intercooler Core Size: W18"xH11.5"xD3"
Intake Manifold: DIY Short runner
Headwork: Mild port, polish, polished combustion chambers.
Engine Management: Megasquirt 3 with expander.
Other Spoolin' Helpers/Hurters: Sequential fuel and spark. Tuned only by VEAL
Trans & Rear End Ratio: RX7 TII 5-speed/4.1 LSD
Rear tire size: 205/50-15

4th gear pull.
RPM - Boost psi
1688 .1
1704 .4
1724 .7
1749 .9
1777 1.1
1806 1.3
1832 1.5
1862 1.7
1895 1.8
1920 2
1994 2.5
2026 2.8
2057 3
2092 3.2
2126 3.4
2160 3.7
2192 3.9
2227 4.2
2262 4.5
2291 4.8
2333 5
2366 5.3
2405 5.6
2444 6
2484 6.3
2524 6.7
2565 7.1
2600 7.5
2644 8
2687 8.5
2741 9
2783 9.6
2822 10.3
2874 10.9
2931 11.8
2985 12.2
3031 12.8

Time to break spool records :vash2:

Engine: '99 1.9L 9.5:1 84mm supertechs
Turbo: GT2871r .64
Manifold: ARTech™ Ramhorn Top Mount manifold
Downpipe Size/Style: 3.5" homemade
Exhaust Size: 3.5" homemade
Exhaust Components: Magnaflow 5x11x22 muffler
Intercooler Core Size: 550mm x 225mm x 64mm
Intake Manifold: Honda ITR + 70mm TB
Headwork: stock BP4W
Engine Management: Adaptronic E420c
Other Spoolin' Helpers/Hurters: EBC
Trans & Rear End Ratio: 6-speed, 3.6 LSD
Rear tire size: 215/45/16

FIFTH GEAR PULL:

RPM Boost(psi)
2388 2.9
2479 3.9
2575 4.7
2640 5.9
2768 6.9
2868 8.1
2934 8.8
3088 10.5
3158 11.6
3253 13.0
3340 13.9
3384 15.0 :jerkit:

https://www.miataturbo.net/attachmen...ine=1366266367

Not bad for stock 99 head? I begin to open WG at 3K rpm, if I can keep that closed little bit longer I think it will spool quicker.

Engine: '93 1.6 Stock
Turbo: GT2560
Manifold: Begi log
Downpipe Size/Style: Begi separated gasses, 2,75"
Exhaust Size: 2.5" homemade
Exhaust Components: 2.5" muffler & 2.5"cat
Intercooler Core Size: Begi size #2
Intake Manifold: Stock
Headwork: stock
Engine Management: MS2X by Reverant
Other Spoolin' Helpers/Hurters: MBC, E85 Ethanol fuel
Trans & Rear End Ratio: 5-speed, 4.1 Kaaz LSD
Rear tire size: 205/45/16

4th gear pull.

RPM Boost (kpa)
1300 100
1880 120
2700 140
2870 150
3000 160
3250 170
3400 180
3580 190 kpa. (13.05psi)

https://www.miataturbo.net/attachmen...ine=1371726992

is your 1.6L built?

12.8:1 at 13psi is ambitious.

did you look at the spark timing?

Just noticed he's running E85. Ignore us.

aw :cry:

Not yet, I'm planning to get another shortblock to throw china-rods in. I'll have to cut the boost a bit to keep my engine in one piece.

Engine: 01' 1.8L with functional VVT
Turbo: Precision 4828
Manifold: BEGI cast style with EGR
Downpipe Size/Style: older BEGI non separated gasses
Exhaust Size: Flyin' Miata 2.5" with high flow cat and resonator
Other exhaust: Stock muffler for now.
Intercooler Core Size: 18"x8"x3"? (estimated from memory)
Charge Piping: 2" over the top style hotside, 2.5" behind headlight coldside.
Intake Manifold: Stock
Headwork: none
Engine Management: MS3x running a suboptimal tune
Rear tire size: 205/45R16
Other helpers/hurters: EBC limited to 160kpa

5th gear pull

RPM PSI
2359 0
2392 1.2
2569 2
2895 3
3318 4
3468 5
3599 6
3695 7.1
3767 8.1

I would have kept going but I ran out of clear highway. I would have hit 9.2psi in another hundred or or so RPM.
Log of pull is in my build thread. Also of note - 10psi is pretty much full boost for my build. This turbo should be putting down about 240hp max at that PSI but not at that RPM obviously.

Does anyone have data on pre/post tune? I'm curious what people are seeing as a change from tuning alone.

:party:

As I make changes I will post my msq's along with each update.

Engine: '01 1.8L stock
Turbo: Precision 4828 .64
Manifold: BEGI Cast
Downpipe Size/Style: 2"-2.5" old style BEGI
Exhaust Size: 2.5" Flyin' Miata midpipe with cat and resonator
Exhaust Components: 3" Magnaflow #12578
Intercooler Core Size: ?
Intake Manifold: stock
Headwork: stock
Engine Management: MS3x
Other Spoolin' Helpers/Hurters: EBC limited to 162kpa
Trans & Rear End Ratio: 6-speed, 3.9 LSD
Rear tire size: 205/45/16
5th gear pull

RPM PSI
2025 .6
2056 2
2092 3
2974 4
3288 5.1
3400 6
3503 7
3602 7.9
3655 8.8
3696 9.9

For comparison purposes, Virtual Dyno says that I should be making 185 lb/ft at 3696 rpm (and rising).

Engine: '96 1.8l in a ’93 body
Turbo: T3/T4B .48AR
Manifold: Begi log
Downpipe Size/Style: Crappy 2.5
Exhaust Size: 2.5 crush bent exhaust with straight through muffler
Intercooler Core Size: 9x24x2.5
Intake Manifold: Stock
Headwork: none
Engine Management: MS3X
Rear tire size: 205/40/17
Other helpers/hurters: stock 5spd and RX7 TII rearend 4.1

rpm psi
2007 1.1
2256 2
2515 2.7
2754 3.4
3012 3.8
3254 4.5
3511 5.4
3755 6.7
3897 7.2

New 1999 DIY build running 10PSI EBC controlled maximum boost with the ignition map that came with MS3 and some fuel autotune.
I will post a another log after the car gets tuned to see if there are spool changes.

Engine: 99 1/8L Supertech 8.5:1 Scott roods
Turbo: EFR 6258
Manifold: DIY long runner 1.5" primaries top mount
Downpipe Size/Style: DIY 3"
Exhaust Size: DIY 3"
Exhaust Components: resonator & Magnaflow Muffler
Intercooler Core Size: Water to air 6"x 8"x 3.5"
Intake Manifold: Stock
Headwork: stock
Engine Management: Megasquirt MS3 basic
Fuel: 93 pump gas ID1000 injectors
Other Spoolin' Helpers/Hurters: LS truck coils sequential
Trans & Rear End Ratio: 6-speed, 3.90 LSD
Rear tire size: 225/45-16

5th gear pull
RPM PSI TP %
1543 0.1 40
1581 0.5 70
1667 1.0 100
1797 1.9
1891 2.4
1997 2.7
2104 3.0
2226 3.2
2321 3.5
2429 4.0
2521 4.6
2624 5.4
2715 6.4
2804 7.4
2950 9.3
3023 10.0

Engine: 1.9 built 9:1
Turbo: TD05HR Twin Scroll 10.5T
Manifold: XS Power off a Evo 8
Down pipe: 3" Ho-made stainless
Ex Size: 3"
Exhaust Components: Dynomax VT
Intercooler: old FM
Intake: Gutted stock w/manual butterflies
Headwork: P&P +1 Supertech, Adj cam gears
Eng Management: Rev's MS2+
Fuel: 93oct 900cc inj
Other helpers/hurters: LS2 coils,Hallman MBC, conservative timing, intake S-bend removed
Trans & rear end: 6spd, 3.63
Rear Tire: 225 40 17

RPM KPA PSI

2433 100 0.0
2551 121.0 2.3
2686 136.6 5.2
2898 164.7 9.2
3086 185.4 12.4
3233 203.8 14.8
3369 221.0 17.7
3501 232.8 19.3
3682 234.4 19.3
3824 231.0 19.0
3985 232.9 19.2
4232 245.2 21.0
4394 239.3 20.1
4474 231.9 19.1
4724 220.3 17.4
4861 227.2 18.6
5015 234.8 19.5
5319 231.1 19.0
5609 227.1 18.6
5968 241.5 20.1

Engine: ’93 1.6 stock
Turbo: TD04L
Manifold: Custom
Downpipe Elbow 2.5
Exhaust Size: stock downpipe, test pipe, 2.25 catback,
Intake Manifold: Stock
Headwork: none
Engine Management: MS2X
Other helpers/hurters: EBC

rpm map
2007 110
2290 120
2505 130
2685 140
2860 150
3057 160
3233 170
3476 180
3689 190
3950 200