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Old 09-08-2007, 11:00 PM   #1
socalLGT
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Default 05 LGT 389whp/344wtq - My first time tuning!

I'll post this up to see what the tuning gurus and the peanut gallery think I know a bit about tuning, but have never had the nad to actually get behind the controls Since this setup is getting replaced in a couple weeks with a GT35R I figured I'd see what I could do with it. Here is the combo:

Block:
Supertech pistons
Manley rods
Cosworth bearings
Cosworth oil pump

Heads:
Cosworth cams
Supertech valves and valve springs

All the machine work and porting on the heads was done by a local machine shop.

SZ55 with 3" inlet and 7cm2 turbine housing
Megan Racing turboback (with a high flow cat welded in)
PDE uppipe
APS inlet pipe
Perrin FMIC
Perrin fuel rails
PE850's
Walbro
UTEC running SD.

There's more stuff on the car, but that's probably what matters.

Here's the graph, I'm pretty happy with it, especially for my first effort. Straight 91 octane CA pump gas. No alky. 20psi tapering to 18psi. 95* ambient in the shop.



EDIT: Check post #32 for even better results from a bit more tuning
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Last edited by socalLGT; 09-09-2007 at 11:49 PM.
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Old 09-08-2007, 11:20 PM   #2
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It looks very nice to me, enjoy.
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Old 09-09-2007, 12:00 AM   #3
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I've seen professional tuners have rougher curves than that with a smoothing of 5. Not bad for tuning it yourself at all, should be fun until you get that GT35R in there, then it will just be scary
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Old 09-09-2007, 12:21 AM   #4
socalLGT
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Originally Posted by wrxfactor View Post
I've seen professional tuners have rougher curves than that with a smoothing of 5. Not bad for tuning it yourself at all, should be fun until you get that GT35R in there, then it will just be scary
Thanks! With the smoothing set to 5 the lines were completely smooth and devoid of any kind of jaggies. I like to see if there is anything bad going on, so I left it on 3. There is not knock at all in the tune. The Dynojet is somewhat maligned here, but it sure is accurate. The tiny dip you might be able to see at 6250rpm is .5* of timing that I pulled from the map in that region because it seemed a bit knock happy. The car pulls smooth and strong throughout the entire powerband.
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Old 09-09-2007, 12:36 AM   #5
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Looks nice. What's your target a/f?

-- Ed
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Old 09-09-2007, 12:40 AM   #6
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Looks nice. What's your target a/f?

-- Ed
11.2-11.3 which the car holds nicely pretty much from 5K rpm and on. I couldn't get rid of the little bump at 4.6K rpm, but it's only 11.57 AFR there, so I wasn't too concerned.
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Old 09-09-2007, 03:04 AM   #7
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good job paul i am rubbing off on you !!
heh rubbing on paul thats just DRRRTY
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Old 09-09-2007, 03:26 AM   #8
socalLGT
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good job paul i am rubbing off on you !!
heh rubbing on paul thats just DRRRTY
Jon... you are the epitome of DERRRRRTY!

I :heart: Jon and Harman Motive
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Old 09-09-2007, 03:40 AM   #9
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Jon... you are the epitome of DERRRRRTY!

after tonight yea..... im almost done :-p
3.5L + 70+lb/min = whee
Poor poor 295's they have no idea what is in store for them
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Old 09-09-2007, 03:45 AM   #10
socalLGT
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after tonight yea..... im almost done :-p
3.5L + 70+lb/min = whee
Poor poor 295's they have no idea what is in store for them
I liked you better when you were an LGT guy and not some ghey 350Z guy

I'll race you for pinks from a dig over an 1/8 mile
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Old 09-09-2007, 03:51 AM   #11
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I liked you better when you were an LGT guy and not some ghey 350Z guy

I'll race you for pinks from a dig over an 1/8 mile
hehe u realize ill have anti lag,REAL traction control, and 295 r comp right?

1/8 mile........ sht b1tch you cant even SPOOL before that

lets do the ricer 2nd gear roll on the 405 !!!

U honk first.....
i bet you cant even beat dans 14.7 on the mustang in a stock 08 wrx!!
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Old 09-09-2007, 04:06 AM   #12
socalLGT
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hehe u realize ill have anti lag,REAL traction control, and 295 r comp right?

1/8 mile........ sht b1tch you cant even SPOOL before that

lets do the ricer 2nd gear roll on the 405 !!!

U honk first.....
i bet you cant even beat dans 14.7 on the mustang in a stock 08 wrx!!
I got me some launch control and flat foot shifting too don't cha know

I like the ricer roll on better though... so bring it!

So I take it you guys get the brand ****** engine management into the 08?
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Old 09-09-2007, 04:25 AM   #13
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I got me some launch control and flat foot shifting too don't cha know

I like the ricer roll on better though... so bring it!

So I take it you guys get the brand ****** engine management into the 08?
Stock as a box o rox
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Old 09-09-2007, 06:56 AM   #14
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Originally Posted by wrxfactor View Post
I've seen professional tuners have rougher curves than that with a smoothing of 5. Not bad for tuning it yourself at all, should be fun until you get that GT35R in there, then it will just be scary
cough cough *Dynoflash* cough cough
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Old 09-09-2007, 11:17 AM   #15
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Originally Posted by spoolinsti05 View Post
cough cough *Dynoflash* cough cough
Actually Al has been posting graphs with smoothing of 0, and one with 2, as I remember. He posted one with a smoothing of 5 and I questioned it, but I'm not really sure I got an answer. I'm more referring to other tuners and shops that are not as popular here, where it is the person posting the graph and not the tuner.

::edit:: Here are some threads: http://forums.nasioc.com/forums/show....php?t=1324434
http://forums.nasioc.com/forums/show....php?t=1335530
http://forums.nasioc.com/forums/show....php?t=1339902
http://forums.nasioc.com/forums/show....php?t=1332699
http://forums.nasioc.com/forums/show....php?t=1332521

Here are some others: http://forums.nasioc.com/forums/show....php?t=1284119
http://forums.nasioc.com/forums/show....php?t=1263576

Last edited by wrxfactor; 09-09-2007 at 11:33 AM.
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Old 09-09-2007, 01:12 PM   #16
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Quote:
Originally Posted by socalLGT View Post
11.2-11.3 which the car holds nicely pretty much from 5K rpm and on. I couldn't get rid of the little bump at 4.6K rpm, but it's only 11.57 AFR there, so I wasn't too concerned.
This is on Cali 91? That's definitely on the lean side for this gas. If you get a less than stellar tank you'll have a ton of knock. This happens more often than you'd think out in California. Try nudging a/f down to 10.7-10.8 and I'm willing to bet you can get about the same power as you have now with an extra degree or two of ignition advance. You'll certainly gain a bit of consistency.

Thanks
-- Ed
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Old 09-09-2007, 01:33 PM   #17
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This is on Cali 91? That's definitely on the lean side for this gas. If you get a less than stellar tank you'll have a ton of knock. This happens more often than you'd think out in California. Try nudging a/f down to 10.7-10.8 and I'm willing to bet you can get about the same power as you have now with an extra degree or two of ignition advance. You'll certainly gain a bit of consistency.

Thanks
-- Ed
The 11.2-11.3 target was for the tailpipe wideband and I have a cat on my car. I'm actually seeing about 10.8-10.9 on the wideband in my DP, so it looks like we are on the same page I might nudge down the timing a smidge and try to run a little more boost.
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Old 09-09-2007, 01:35 PM   #18
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Quote:
Originally Posted by socalLGT View Post
The 11.2-11.3 target was for the tailpipe wideband and I have a cat on my car. I'm actually seeing about 10.8-10.9 on the wideband in my DP, so it looks like we are on the same page I might nudge down the timing a smidge and try to run a little more boost.
Fair enough. More boost might get that mid range torque up a bit. Its pretty tough to get any more top end power past ~20-21psi on 91 Octane though.

-- Ed
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Old 09-09-2007, 01:40 PM   #19
socalLGT
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A little more midrange torque with a bit more boost is about the only thing I think I can get given the limitations of our gas. Then again I could just switch on the alky system
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Old 09-09-2007, 02:05 PM   #20
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Congrats Paul great job!.. now lets what you can do with the gt35r!!
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Old 09-09-2007, 04:04 PM   #21
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Pauls car is the pretty SWP

Last edited by Ts30RLGT; 09-09-2007 at 08:49 PM.
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Old 09-09-2007, 05:42 PM   #22
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any pics of the lgt?
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Old 09-09-2007, 05:47 PM   #23
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any pics of the lgt?
Here are a couple:







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Old 09-09-2007, 06:26 PM   #24
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+1 boostjunkie

legacy ftmtfw
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Old 09-09-2007, 07:24 PM   #25
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Quote:
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Al is the master manipulator of the dynograph
his runs never start@ 2k (where the pull should)
he also does this little trick
here are 4 charts of the same car/ tune
a baseline how it came in and a post tune
Smoothing on 0 and smoothing on 5



SEE where im going here?

yea......



I see dynojet users do this alot to make their stuff look better
Imho pauls graph looks great.

but on anything other than 91 octane its not hard to make a SMOOTH dyno chart (racegas, 95 oct, 109 , c16, eastcoast 923, etc etc)




I dont see where you are going, in fact you make no sense to me what so ever. I am sorry to introject myself into this thread, but I just dont get your point.

I dont understand why yourself and the other gentleman feel compeled to take the OP's thread OFF TOPIC with your ill founded remarks which have no relevance to the OP's car or thread.

The wonderful thing about a Dyno Jet dyno is that there is very limited adjustment that can be made other than changing the correction factor - (e.g. uncorrected, SAE, STD, etc) and the smoothing which can be ste ranging from 0 - 5. You simply push the button when you start the pull and push the button at the end of the pull the dyno does all the rest. IThis is what makes a Dyno Jet such a wonderul tool becuase they all read in a very similar manner.

Dyno jet is not like some other end user adjustable dynos such as dyno pak, mustang, etc in which the dyno operator must enter in numerous variables which have a significant impact in both the ultimate power figure and the shape and length of the pull.

I dont get how posting these dyno sheets from Harman Motive shows anything about dyno jets.

Al
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