paul

iTrader: (21)

Gt2560r ftmfw!

johndoe

iTrader: (5)

yup. controlled boost is a wonderful thing. Maybe someone who knows what they're doing (ie. not me) can throw me up in that graph.

cueball1

iTrader: (13)

Nice job Johnny boy! Good to see it up and running.

johndoe

iTrader: (5)

Thanks man! I didn't know how much I missed it until I drove it again.

bryantaylor

iTrader: (5)

Engine: '90 1.6L
Turbo: turbonetics t3/t4
Manifold: ebay cast
Downpipe Size/Style: single 2.5"
Exhaust Size: 3"
Exhaust Components: none, just straight pipe
Intercooler Core Size: stock starion
Intake Manifold: Stock
Headwork: none
Engine Management: Megasquirt
Other Spoolin' Helpers/Hurters: 2" hot side and 2.5" cold side charge pipes
Trans & Rear End Ratio: 5-speed, stock 1.6 open
Rear tire size: 205-50-15

4th gear pull

1800 1.0
2400 2.0
2700 3.0
2900 4.0
3100 5.0
3300 6.0
3600 8.0
3800 9.0
4000 10.0
4200 12.0

cueball1

iTrader: (13)

Time to update the thread with a new chart?

skidude

iTrader: (3)

Engine: '94 1.8L
Turbo: TD05 14b
Manifold:Custom Log
Downpipe Size/Style: Single tube 2.5"
Exhaust Size: 2.5"
Exhaust Components: 2.5 I/O "High Flow" ebay cat, 2.5" Magnaflow
Intercooler Core Size: 16.5 X 8 X 3
Intake Manifold: Stock
Headwork: None
Engine Management: Megasquirt
Other Spoolin' Helpers/Hurters: MS EBC, relatively cool air (mid 50's)
Trans & Rear End Ratio: 5-speed, 4.1 LSD
Rear tire size: 225/45-15

FOURTH GEAR PULL:

RPM Boost(psi)
1800 0.2
2010 1.7
2203 2.9
2401 4.2
2620 5.9
2809 7.9
3007 10.3
3250 13.8

CEO

Engine: 99 2.0L
Turbo: HKS TO4Z .82 A/R T4 STYLE
Manifold: CUSTOM
Downpipe Size/Style: 80mm
Exhaust Size: 80mm
Intercooler Core Size: 90 cm X 45 cm X 8 cm
Intake Manifold: JG EDERBLOCK
Headwork: FULL Porting
Engine Management: HKS FCON VPRO
Other Spoolin' Helpers/Hurters: ULTRA MDI RR IGNITION
Trans & Rear End Ratio: 5-speed RX7 3.636 CUSCO LSD
Rear tire size: 205/40-17

FOURTH GEAR PULL:

RPM Boost ( BAR )

3500 0.3
3800 0.5
4000 0.8
4200 1
4600 1.5
5000 2

bryantaylor

iTrader: (5)

LOL, all aboard the failboat

Braineack

iTrader: (62)

2bar = 30psi sucka.

bryantaylor

iTrader: (5)

whoops, need to read closer

psi bar

Zaphod

So now it's my turn to post some data. I have to say, I am impressed by this little T25...

Engine: '99 1.6L (Euro-spec)
Turbo: Garrett T25
Manifold:cast HGP (German Turbo-kits manufacturer)
Downpipe Size/Style: Single tube 2.5"
Exhaust Size: 2.5"
Exhaust Components: 2.5 I/O metall core 200cell catalytic converter, 2.5" Fox Exhaust
Intercooler Core Size: Stock VW Sharan TDI Van
Intake Manifold: Stock
Headwork: None
Engine Management: Megasquirt MS2
Other Spoolin' Helpers/Hurters: MS EBC, relatively cool air (mid 50's), Fidanza lightend flywheel, ACT Stage 1 clutch,
Trans & Rear End Ratio: 5-speed, Stock 99 1,8 Torsen LSD
Rear tire size: 215/40-17

FOURTH GEAR PULL:

rpm boost (psi)
1912 1.7
2014 3.1
2101 3.9
2216 4.7
2306 5.3
2408 6.1
2503 6.8
2602 7.6
2705 8.6
2802 9.7
2904 11.1
2911 11.3 (my overboost protection switched here)
2931 10.9
2962 10.8

skipstr

iTrader: (4)

Begi-S with some upgrades. Took this data this evening, about 50 degrees, 4th gear pull from 1900RPM

Engine: 1995 1.8
Turbo: gt2554r
Manifold: BEGi Cast "Directed Pulse"
Downpipe Size/Style: Begi single 2.5"
Exhaust Size: 2.5"
Exhaust Components: 2.5" test pipe, 2.5" FM Turbo Exhaust
Intercooler Core Size: NONE
Intake Manifold: Stock
Headwork: none
Engine Management: MSPnP, EBC targeted for 12psi
Other Spoolin' Helpers/Hurters: DO Progressive WI M3 nozzle
Trans & Rear End Ratio: 5-speed, 4.10 torsen
Rear tire size: 195/50/15

RPM-psi

1962-0
2102-2.6
2299-4.0
2516-5.2
2710-6.8
2903-8.4
3113-10.2
3314-11.6
3418-12.0

chucker

iTrader: (4)

Engine: '94 1.8
Turbo: GT2554
Manifold: Bell cast (not directed pulse)
Downpipe Size/Style: Bell 2.75” outlet, divorced, mild steel
Exhaust Size: 2 1/8" O.D. Bosal cat-back (don't know the I.D., it's small)
Exhaust Components: factory cat
Intercooler Core Size: Bell #3, don’t know dimensions, it’s big
Intake Manifold: Stock
Headwork: none
Engine Management: MSI 10g
Other Spoolin' Helpers/Hurters: Humphrey EBC
Trans & Rear End Ratio: 5-speed, OE Torsen
Rear tire size: 195/60-14

10 psi is my current max boost target.
Log taken at 75F ambient.

FOURTH GEAR PULL:

RPM Boost(psi)
2211 2.47
2331 4.06
2409 4.99
2534 6.09
2600 6.82
2734 7.80
2814 8.41
2933 9.60
3049 10.7

Dabeast

anybody that has aem ems please post datalogger of dyno pulls!!! maybe then I start beliving these magical numbers.

DOHCPanther

WOW I just PM Deerhunter on M-net about his 3071R stroker. His response was a link on a discussion here.

Deerhunter
"I'm at approximately 2,000 ft above sea level. The difference in spool is very apparent compared to Grand Junction (4,500 ft+). I'll do a datalog as soon as possible, but here is my recollection (based on gauge pressure):
5 psi at a tick past 2K
10 psi before 3K
20+ psi before 4K

Seat of the pants feel is VERY nice I wonder what it'll do at sea level?

BTW, I'm using a DEFI boost gauge, so I'm going to assume that it's fairly accurate.
__________________
'93 L.E. (Mazdaspeed Alternative)
2.0 litre with FMII (GT3071R); Hydramist; Quaife gearbox; AFCO's
355 HP uncorr. at 19 psi; 420 corrected at 23 psi "

He said he would data log later but he is on vacation. Looking at that it is IMPRESSIVE. I want, I want, I want

patsmx5

iTrader: (16)

Engine: 99' 1.8L
Turbo: Garrett GT 3271 52 trim comp, .78 hotside
Manifold: FM T2 manifold converted to T3 w/ 38mm WG added
Downpipe Size/Style: home made 3" w/ WG tied back to downpipe
Exhaust Size: 3 glasspacks and a big Magnaflow all 3"
Exhaust Components: Louvered glasspacks & Magnaflow Muffler
Intercooler Core Size: 20"x12"x3"
Intake Manifold: Stock but vics chamber removed
Headwork: Heavily undercut and backcut stock valves, smoothed SS radius, blended bowls, heavily unshrouded the valves,
Engine Management: Megasquirt II W/ EDIS Trigger wheel setup.
Other Spoolin' Helpers/Hurters: Needs a better tune, using MBC
Trans & Rear End Ratio: 5-speed, 4.3 Open Diff
Rear tire size: 225-50-15's

FOURTH GEAR PULL:

RPM Boost(psi)
1518 1 PSI
1778 2 PSI
2443 3 PSI
2604 4 PSI
2753 5 PSI
2876 6 PSI
3025 7 PSI
3061 8 PSI
3251 9 PSI
3344 9.7 PSI

Similar to Braineack's...

96rdstr

iTrader: (4)

Engine: 96 1.8L
Tranny: 5spd
Diff: Stock LSD
Turbo: Garrett T3/4-60/48
manifold: custom log
WG: External Turbonetics w/MBC limited to 12.5-12.7 psi
Downpipe: custom 3 inch
EMS: 96-97 MSPNP
FMIC: 24x6x3
Tires: Toyo Proxes T1R- 205-50-15

4th Gear Pull
102kpa-2918
120kpa-3096
136kpa-3290
157kpa-3663
173kpa-3853
188kpa-4253

m2cupcar

iTrader: (5)

Did a pull while on my last road trip in FL. Swapped out the cheap-o turbo style eBay Raptor muffler for the big magnaflow 12578 = nice change.

• 2500 2
• 3000 4.8
• 3550 10
• 3750 12.6
• 4000 16

wroark

Engine: 94 1.8L w/130k on the bottom end!
Turbo: T04E .50 compressor / .63 hot side
Manifold: BEGI's latest, coated with external "tial type" dual port
Downpipe Size/Style: home made 3" w/ WG dump under car
Exhaust Size: 3" with 3" 200 cell cat to a 3" Thrush Welded
Intercooler Core Size: 22"x9"x3"
Intake Manifold: Stock with a little port matching
Headwork: Supertech valves, springs & perches, port,polish, bowl work
Engine Management: AEM EMS
Other Spoolin' Helpers/Hurters: Twinfire w/sequential COP, Fidanza flywheel, unknown WG spring so no electronic boost control tuning till after this run.

Trans & Rear End Ratio: 5-speed, 4.1 LSD
Rear tire size: 225-50-15's

Trying to figure out what spring is in my wastegate, looks like about 14psig(from this datalog), it was supposed to be 8.7. Need to tune the boost control with this new found data. 18psi is about right but the ebc is set to start around 8psi so with the just spring pressure it's cracking early. Apparently not enough duty on the boost solenoid either, 4psi spike.

kpa (psig) RPM
37.57 2082
50.14 2125
90.61 2144
100.12 (0) 2335
105.64 2460
110.24 2593
120.36 2796
130.17 3019
145.20 3296
160.22 (8.5) 3589
181.69 3792
200.08 (14.5) 3929
230.14 (18.5) 4207