redline different between a/t & m/t

kinkyllama · Post by **kinkyllama** » Fri Jan 06, 2006 10:11 pm

On the m/t forenza/reno redline (and rev limiter) is at 6,500rpms but on the a/t forenza/reno redline is at 7,200rpm(or 7,300?). What the hells the point? If the power drops of at 5600rpm... it still drops off at that.

Im guessing id be safe moving my rev limiter up to 7,200rpm though. :twisted: Wouldnt serve much of a point though.

Danny

Audacity Racing · Post by **Audacity Racing** » Fri Jan 06, 2006 10:24 pm

i think it's because of the gearing... the auto trannys run out of gearing before the manuals do, so to make up for the speed difference, they add revs

DaewoLeganza · Post by **DaewoLeganza** » Sat Jan 07, 2006 12:41 am

when u see the dyno sheet... the power band drops so much to the point (on daewoos) when u pass max HP and Torque that the fall outs incredibly to much that u lose more than half ur hp on the way to Redline but when u shift the car hits that max hp and torque closer than if u shift on the max mark

Audacity Racing · Post by **Audacity Racing** » Sat Jan 07, 2006 1:36 am

hp doesn't matter a flip when transportation is the primary usage of the car

the time from 70mph to 100mph may be a long time, but in a transportation sense, there is no need to do that really.

kinkyllama · Post by **kinkyllama** » Sat Jan 07, 2006 7:45 pm

Audacityracing wrote:i think it's because of the gearing... the auto trannys run out of gearing before the manuals do, so to make up for the speed difference, they add revs

Nope the a/t on the forenza is geared much much higher.. i beleive it tops out at around 205mph when the m/t tops at 150ish

Post by **PrecisionBoost** » Sat Jan 07, 2006 8:03 pm

I have a Forenza ECU from an automatic and I'm abpit 90% sure it hit the rev limiter at the exact same time as my 5spd Optra 5 ECU ( 6500RPM )

While on the dyno I tested both the AT Forenza ECU and 5spd Optra 5 ECU to see if the Suzuki ECU made more power ( you might remember me posting about how there was zero difference between the two on the dyno despite the fact that Suzuki and GM show different power numbers)

Where the AT Forenza 7200RPM redline info come from?

Have you ever gone to a dealership to look at the AT tachometer?

kinkyllama · Post by **kinkyllama** » Sat Jan 07, 2006 8:43 pm

Erfinder@PrecisionBoost wrote:I have a Forenza ECU from an automatic and I'm abpit 90% sure it hit the rev limiter at the exact same time as my 5spd Optra 5 ECU ( 6500RPM )

While on the dyno I tested both the AT Forenza ECU and 5spd Optra 5 ECU to see if the Suzuki ECU made more power ( you might remember me posting about how there was zero difference between the two on the dyno despite the fact that Suzuki and GM show different power numbers)

Where the AT Forenza 7200RPM redline info come from?

Have you ever gone to a dealership to look at the AT tachometer?

Hmm..

I got the info from several people on suzuki-suzuki forums. Ill make a post to confirm

Nope.. never been in another forenza other than mine.

kinkyllama · Post by **kinkyllama** » Sun Jan 08, 2006 3:25 am

Yep.. someone with an auto forenza from suzuki-forums just told me redline is at 7,200rpm and the rev limiter kicks in at 7,300rpms.

http://www.suzuki-forums.com/index.php? ... =0&p=13313

GsiTurbo · Post by **GsiTurbo** » Sun Jan 08, 2006 3:28 am

If I recall properly, Optra 5-spd with Forenza auto ECU had a redline at 6250....as opposed 6500rpm on 5-spd Optra ECU. This is when Chris and I were testing both ECUs on a dyno.

Tom

kinkyllama · Post by **kinkyllama** » Sun Jan 08, 2006 3:37 am

360 Dynamics wrote:If I recall properly, Optra 5-spd with Forenza auto ECU had a redline at 6250....as opposed 6500rpm on 5-spd Optra ECU. This is when Chris and I were testing both ECUs on a dyno.

Tom

This is getting weird.

What year was that ecu anyways?

GsiTurbo · Post by **GsiTurbo** » Sun Jan 08, 2006 3:40 am

I believe it was 2004 Forenza AT....I am sure Erfinder will jump in and confirm.

Post by **PrecisionBoost** » Sun Jan 08, 2006 8:10 pm

Ya... I'd imagine it's a 2004...... the engine only has 9000miles on it.

It's been a while since we did the dyno testing...... the easiest way to check it is for me to go outside and drop in the Fornenza ECU and test the redline.

Be back in a few minutes.

Post by **PrecisionBoost** » Sun Jan 08, 2006 8:22 pm

Good memory Tom..... your right..... 6250RPM is the Rev limiter on the 2004 Suzuki Forenza automatic ECU.... I just tested it 3 times in 1st gear.

Then I put the 5spd Optra 5 ECU back in and the Rev limiter was bang on 6500RPM.

So....... I really have to wonder what is going on here as well.

Have one of these guys that have a 7250RPM redline take a picture of their tachometer.... I'd like to see some proof.