Tuning Alliance

mike @ ta - any interest in getting your hands on a 5th gen? The guy i used to see left for texas to work for cobb. I think you're about the same distance for me as buffalo, ny where i was going and i like what i've been hearing about safety and reliability being a priority in your tunes.

 

I have the troublesome nameless divorced wastegate dp. Not sure if you're following that saga in the 5th gen section, but i'd like to get this thing taken care of. Your attention to detail may help answer some questions.

pm sent.

Just paid the invoice for my TA stage 2 tune for my 2005 LGT, and I'm more excited than any Christmas I remember!

 

I'll be back soon to update how this weeks down/up/cross pipe + etune install goes.

YAH!

-Brian

I didn't happen to see the Audi A4 hanging around the last time is was over either. I do like the color he painted the house.

A4? Who owns an A4?

-B

I also believe Mike still has his RX7 ?

Yup!

-Brian

Ordered my tune from TA! Eagerly awaiting arrival.

 

Brian, I have to ask, do you guys tune DSM as well? We are currently building a GST into a GSX and it needs a tune!

woot! and yes we do! Both me and Mike have GSX's lol

I know he does. He has one! Lol

^^^^ Yeah Brian has a pretty sweet GSX!

-Brian

Just got started with getting the base map from Mike after talking for a couple weeks while my car has been in the shop. Looking forward to doing the break in period with that tune and then getting into the POWAA!!

-Brian

Thanks Brian,

 

Did Mike tell you there's a black 05 GT Limited wagon down on rt83 in Vernon across from Ace Hardware ? It's a 5eat with 120,000 miles, new turbo for $6300.

He did not, however I'm not looking for one =p

My daily is my 08 Legacy GT with vf52 and supporting mods+ fms fmic.

Other car is my 97 Eclipse GSX (yes, tuning alliance has 2 GSX's lol).

-Brian

Who's Brian?!

Picked the wagon from Mike yesterday. I had them replace the NGK's. I hate that job on these cars. Mike did a log, made a couple small improvements to the tune.

 

Its great having it back for my DD. Been driving the Spec B since last Tuesday.

Rides real nice! =)

-Brian

+1 on the Grimmspeed TMIC, we sell a lot of these. Quality is second to none.

-Brian

sub'd. images are broken...

Are you looking on a phone or computer? I'm seeing them in google chrome browser on my PC.

-Brian

Got tuned by mike last night. The tune feels awesome, the car is running great, and feels better than before. Definately my go to now, considering he is so close too!

Just loaded up one of Mike's tunes today. I'll drive around on it for a while, then pull a log and send that in.

 

Edit: car felt slightly different this morning. Better, in fact from a cold start and through the warm up cycle. The idle seemed more stable and there was not a hint of surging under throttle. No boost though yet. Maybe later.

Glad we could be of help!!

Love my tune from Michael. He's responsive to e-mails and answers all my questions. Great customer service, and the tune is nice and smooth. He's also good about checking your logs. Very cool guy to deal with.

Thank you much!

I hope everyone has a great Holiday! :wub:

I am on my initial MAP with boost set low to get a base line. I'm excited to go through the process.

 

Cobb Up Pipe| Cobb Down pipe | Grimspeed TMIC | JMP VF 40 | DW65 | Stock injectors | One Step colder plugs | Cobb EBCS | Cobb AP V2

Revision sent last night.

I do not but this experience may be the push to finally get one. I have been wanting one for years.

I would next try, to disconnect the flap so its flopping and open. See if it persists or give you no boost. Sorry if you have already tired this I didn't go back and read all the posts.

lol right from our discussion

People keep asking and I find myself explaining this stuff twice a day. Time to get it out there then I can just link people to it.

More to come!!!

Reserved

(***under construction***)

Next I want discuss the reality of putting a larger compressor or turbine wheel inside a stock housing.

When you machine the stock turbine housing to accept a larger wheel, there are some disadvantages to be noted. A stock turbine housing has internal passages which are carefully sized in volume, width, and the delivery channel which directs flow on to the blades is a matching dimension. This gives the most effective delivery of exhaust into the wheel. If you install a larger wheel there is now a mismatch of these dimensions and a portion of the trailing edge of the blades that is not in fact hit directly with exhaust as it would in a turbine housing design for that turbine.

Many people only think about the increase in diameter when they are picturing the larger wheel inside the housing. I'm not saying it doesn't work, as it does work. What I'm saying that all of the bolt-on upgraded turbos, do not have the proper volume or channel to drive the turbine at its maximum efficiency. The same thing goes for the compressor housing. Other aftermarket non bolt-on turbos spool faster and are more efficient due to this fact. This is why I often urge people to use either a OEM turbo or a full rotated setup with a fully matched configuration.

http://i463.photobucket.com/albums/qq357/tuningalliance/turbine_1.jpg

http://i463.photobucket.com/albums/qq357/tuningalliance/detail%20turbine_1.jpg

I've been talking to a lot of people with upgraded oem style turbos VF40, VF46, VF52, and so on. I wanted to post my thoughts on what is an effective upgrade and what is not from a turbo geometry perspective.

For example, I dont advise installing a larger compressor wheel on a VF40 as that configuration is already largerly turbine restricted. Installing a bigger comp wheel further unbalances the flow rates, increases back pressure at full boost, and may hurt power levels overall.

(***under construction***)

http://i463.photobucket.com/albums/qq357/tuningalliance/comparo.png

I'd like to talk about wheel sizing between compressor and turbines. As you can see I highlighted the "Inlet/out" ratio, which is simply the inlet diameter (compressor inducer) divided by the outlet diameter (turbine exducer). A perfect turbo would have a 1.00 ratio, and as you can see a GTX3582R is pretty darn close. A value over 1.00 indicates the turbine section is the restriction point, where as a value under 1.00 indicates a compressor restriction point.

A stock VF40 has a 1.08 ratio. Meaning is largely turbine restrictive, and upgrading the compressor will only worsen this ratio, and will not allow for additional power as the small outlet is the overall restriction point. This turbo would likely benefit from turbine wheel clipping or turbine housing porting. As upgrading the turbine section doesn't really make financial sense.

A stock VF52 has a 0.96 ratio, meaning it could benefit from a little bit bigger compressor inlet size. So a little larger billet wheel could be a helpful upgrade.