Dynos are nice... but they are all different and typically create a load that isn't totally road-like. Where the rubber literally hits the road is on a 3rd gear street pull. Lots can be said of a setup based on the data provided in a 3rd gear street pull.

So here's the deal. Make a 3rd gear pull from 2000 RPM or so to redline. Use a flat road, no hills, no brake boosting.

- List your setup

- Plot "boost vs RPM", this will show us how fast your turbo spools on the street in real-world conditions

- Plot RPM vs Time

- Plot Speed vs Time

- Plot HP and TQ numbers if your datalogger can do such a thing.


I'll start...

 

- jid2 built 2.3L (Wiseco, Eagle)
- GT3076R, 23 psi, 94 octane
- Kelford 272's

Here's Boost vs RPM. Load is in pink to show an approximate torque curve. I'll have the other plots tomorrow after more tuning.



DLL Plot Pump Gas 24 psi (weight was wrong for the car, more like 400 whp).



DLL Plot E85 28 psi (correct car weight)

 

this was when i was still tuning the boost profile, but its pretty representative of what my car is doing

2.3L
3076R
Kelford 272's

 

Most bolt on's besides stock fmic, stock turbo, Ecuboost. Does over 370whp on DLL. Full spool at 3340 according to my ZT2 and holds 20.5 to 7500rpm.

 

I'll start with debunking the opinion that a well-setup dyno can't replicate street load.

3rd gear on street vs 3rd gear on our Mustang dyno (street pull was started in higher rpm):



Another 3rd gear on street Vs. Dyno



Now that I've said that, here are some 3rd gear logs.

Log 3rd gear, street, 91oct, FPgreen, Evo 8, 27psi



Timing:



I have a bunch more that I don't currently have access to that I can post up later.

 

Mods:
GSC 264/272
FIC 1150's
Walbro 255
RNR BB 50-Trim
APS BOV & TBE
ETS IC Pipes
Nisei IC
HKS DLI2
Ecuflash / E70_E85
Dejon Intake / AEM MAF adaptor / K&N Filter
Hallman MBC
ACT HD w/ Prostreet Flywheel
PPI Ported Intake Manifold & 65mm TB
Import DPS Intake Manifold Gasket
ARP Headstuds

DLL Plot:
32psi / E70 / 17 degrees up top (90% IDC / 2330Hz airflow)


Boost v RPM:


I'll have to pull the other data off my laptop later.

 

i am embarassed to put up my numbers lol.... all i am making is 300

all i got is a 3" TBE and 3 port BCS. hitting 24 psi @ peak tapering to 22 psi.

log done in 3rd gear from 3000rpm and i got full boost at 3551 rpm

 

Most shops don't bother to even try! You guys do good work, and I know you've done lots of research on loggers vs dynos!

Thanks for the data, that's some good stuff.

 

updated mine with a DLL plot

 

ETS Kit PT61mm BB
ETS piping
ETS 3.5in FMIC
Injen DP back 3in
BC 272's
PT 880's
I don't log boost
25-26psi on the gauge PUMP GAS

DLL Plot

 

would love to see the boost vs rpm log on a HTA3582R on a 2.0l setup if anyone has

 

Updated my post with E85 info.

 

great thread....

 

New Graphs, I'll add boost logs next time I do logging:

HTA3582 / 24psi / E85 / Stock 2.0 (Used old 50-trim chart at 23psi on pump 93 for comparison)


HTA3582 / 26psi / E85 / Stock 2.0 (Used old 50-trim chart at 23psi on pump 93 for comparison)

 

That's why I drove to the Bay area to get tuned by Brian.