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-   -   Falling On It's Face (http://legacygt.com/forums/showthread.php?t=197514)

rob-2 12-05-2012 09:44 AM

Falling On It's Face
 
I'm running stage 1 ACN and I cannot help but notice the car just falls on it's face around 5.5-6.5K.

Is there any way to fix this? I hate the power band. This morning I dropped it, revs spike, and car just sits there until I reach red and shift to the next gear. It's as if I'm better to treat the car like it has a 5K redline.

Why is the map lowering boost close to red? I realize everyone is going to say 'protect the motor' but I'm not buying it. It should run 14-15psi till red. We have a BOV to protect stuff on shifts.

Thoughts?

Nrw 12-05-2012 09:49 AM

The stock turbo can only push so much air. Restrictive intercooler and downpipe don't help the cause either.

mwiener2 12-05-2012 10:49 AM

Your car is not happy with you. It's also probably got issues that you aren't aware of,

Nolmers06LGT 12-05-2012 11:17 AM

Quote:

Originally Posted by Nrw (Post 4187710)
The stock turbo can only push so much air. Restrictive intercooler and downpipe don't help the cause either.

Agreed. If you want to fix your powerband, go stage 2. There's not necessarily anything wrong with your car.. The airflow of the stock exhaust is so restrictive that the engine can't breath- My peak power runs from 3200rpm to 4500rpm, if I'm lucky. I never pull past 5k- on a stage 1 tune there isn't much point. I'm going stage 2 this weekend- I'll make sure to let you know how it feels.

robinlsb 12-05-2012 12:06 PM

Quote:

Originally Posted by rob-2 (Post 4187702)
I'm running stage 1 ACN and I cannot help but notice the car just falls on it's face around 5.5-6.5K.

Is there any way to fix this? I hate the power band. This morning I dropped it, revs spike, and car just sits there until I reach red and shift to the next gear. It's as if I'm better to treat the car like it has a 5K redline.

Why is the map lowering boost close to red? I realize everyone is going to say 'protect the motor' but I'm not buying it. It should run 14-15psi till red. We have a BOV to protect stuff on shifts.

Thoughts?

I know you kids like high red lines, but, if you look at almost all non race printouts, the torque drops right off after 5-6k.

There is fast, and there is quick. Learn to know the difference:)

underground000 12-05-2012 12:08 PM

bigger turbo oem is not made for high rpms.... normal people are not driving up there

F1inspiredLGT 12-05-2012 12:12 PM

I'm stage1 and it's smooth all the way up to about 5,500 RPMs, then it starts fad a little. This is usually my shift point to stay within the powerband.

Otherwise, take a look at your data log, this should give you an idea what's going on.

BoozeRS05 12-05-2012 12:18 PM

5EAT + stock turbo + stg1 + ACN91 OCT = not fast..

O.C.D. 12-05-2012 01:45 PM

I literally just became disappointed with my LGT about 15 minutes ago after I realized that Stage 1 is not enough to keep me happy. She falls right on her face and there is no more.

Stage 1 has helped but this little VF40 is no good for my tastes.

Sad am I. :soap_box:

BoozeRS05 12-05-2012 01:59 PM

Quote:

Originally Posted by robinlsb (Post 4187991)
There is fast, and there is quick. Learn to know the difference:)

^ Excellent point here.

STi at stg2 is the starting point of 'fast' that I've driven..

rob-2 12-05-2012 03:09 PM

Quote:

Originally Posted by robinlsb (Post 4187991)
I know you kids like high red lines, but, if you look at almost all non race printouts, the torque drops right off after 5-6k.

There is fast, and there is quick. Learn to know the difference:)

You're likely younger than me.

I'll probably lower the redline to force a sooner shift in the auto. This is my winter car. I wouldn't own it but it'd cost too much to switch. Bit of an F U to the ex-wife that I got it.

robitrice 12-06-2012 08:28 AM

its called optimal shift point......just cause there is a redline doesnt mean you shift at redline. When you accelerate you are feeling TQ, thats why it feels quick from 3K-5K rpms and then tq plummets. Having a 5eat doesn't help that feeling at all. Quick is TQ and Fast is HP, like someone said there is quick and there is fast, a big difference. These turbo's were put on a car meant to be driven in stock form. The avg person does not drive spirited so a turbo designed for dd will produce more low end power as that is the reality of the cars use. If you want more up top you need a bigger turbo, you can adjust the boost and hold whatever psi you want at redline but if anything you will just be turning it into a hair dryer and run it past its efficiency level.

robinlsb 12-06-2012 01:03 PM

Quote:

Originally Posted by rob-2 (Post 4188340)
You're likely younger than me.

I'll probably lower the redline to force a sooner shift in the auto. This is my winter car. I wouldn't own it but it'd cost too much to switch. Bit of an F U to the ex-wife that I got it.

Unless you are on Medicare and SS, you are younger than me:lol:

rob-2 12-06-2012 01:08 PM

Quote:

Originally Posted by robitrice (Post 4189357)
its called optimal shift point......just cause there is a redline doesnt mean you shift at redline. When you accelerate you are feeling TQ, thats why it feels quick from 3K-5K rpms and then tq plummets. Having a 5eat doesn't help that feeling at all. Quick is TQ and Fast is HP, like someone said there is quick and there is fast, a big difference. These turbo's were put on a car meant to be driven in stock form. The avg person does not drive spirited so a turbo designed for dd will produce more low end power as that is the reality of the cars use. If you want more up top you need a bigger turbo, you can adjust the boost and hold whatever psi you want at redline but if anything you will just be turning it into a hair dryer and run it past its efficiency level.

I'm well aware of shift points. Thank you.

A motor that has 1K of unusable power in the rev range is a bad design. However you want to look at it, it's just a reminder of how poorly these cars are designed.

BoozeRS05 12-06-2012 01:30 PM

:lol:


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