curly

iTrader: (25)

After helping a friend with some MS tuning on the dyno, apparently the "boss" was gone for the day, so I got two free runs on the dyno. Only changed boost, from 9psi to 10.5psi ish. Dyno and data logs below. I'm not terribly happy, but whatevers, I'll work on it.



First, 165kpa log datalog:


2nd, 174kpa run:


Hmm, setup is pretty much in my signature, 3" downpipe choked down to a 2.5" cat and 2.5 crush bent exhaust, unknown health on the engine, hopefully the compression is higher than my boost.

Comments welcome, not sure where to go from here...the shop did name their dyno "dream crusher".

18psi

iTrader: (76)

ouch...

soviet

iTrader: (10)

you look like you're running *decent* amount of timing...
is your timing synchronized correctly?

mgeoffriau

iTrader: (7)

Wow. Not what I expected. Is this a Greddy turbo?

curly

iTrader: (25)

SR20 T25.

I should double check both the timing belt and the timing light thingy, I just redid them and they were pretty spot on. Doesn't hurt to check. Timing map:

18psi

iTrader: (76)

timing map looks good

curly

iTrader: (25)

I don't like this dyno.

Faeflora

iTrader: (2)

Explain.

That is some limp dick weaksauce timing for 10psi.

It still doesn't explain the 50hp gap between dyno'd hp and what it should be at.

hustler

iTrader: (6)

Did the guy running the dyno have the right correction values in? If the engine is healthy, the exhaust is 3", then you should have made 50-75whp more.

hustler

iTrader: (6)

Edit:
I changed my mind, don't load that table. Did you hit MBT?

Faeflora

iTrader: (2)

Come on. Unless he shaved his head a foot he is like 6* away from MBT

18psi

iTrader: (76)

Not sure about how good your gayz gas is, but over here besides e85 we only have CA 91 camel ****. On said camel **** 14-16* is about the max I'd run @ peak tapering up to about 18-19* at redline depending on turbo and setup.

More timing and the engine pulls a Faeflora

If you have 93 and its good quality, then nevermind

Faeflora

iTrader: (2)

Ah, wow, ok. That explains your subaru timing map too.

I have no experience tuning CA 91.

sturovo

update your sig? I am only 157....

Braineack

iTrader: (62)

exactly what I expected considering his exhaust setup.

curly

iTrader: (25)

Yeah, that non hi-flow cat and 2.5 isnt helping.

I'm running 93 octane all the time.

Hustler showed me his timing map and I split the difference between his and diy's ultra conservative base map. Should I go for something more aggressive? Playing with the timing with the NA car certainly showed what timing changes can do, it really liked 30*. I wanna be pretty safe though.

Braineack

iTrader: (62)

will adding timing decrease your backpressure?

curly

iTrader: (25)

Not 3", see above.

18psi

iTrader: (76)

You need to listen to teh Brainz and increase VE instead of ramping up timing on a constipated setup. 3" all the way would be a good start. Then you can bump up timing another 6* like Fae is suggesting without much ill effect

Should pick up a large chunk of power

curly

iTrader: (25)

I'll keep that in mind, i also know how much choked. Exhaust adds heat, I wonder if I should be looking at my cat for cloggage. It's pretty old.