TTi Stage 1 Question/DIY Tuning

[lplott]

Do you guys who work on your own tunes:
(preliminary mod info: TTi Stage 1, Ramdom Tech High Flow Cats, large single BOV one of only a few, running a quart of Torco per tank to eliminate a couple degrees KR)
1. Turn off the after CAT O2 sensors?
2. With the after CAT 02 sensors turned off, would this be considered 'open loop' or will the pre-CAT O2 sensors make it 'closed loop'? (curiosity question)
3. What AFR do you try to achieve for your street tune?
4. How lean do you tune for race events?
5. With my setup, would going to AutoTune, MAFless SpeedDensity, and a WB O2 sensor be worth the effort/expense? (note: not really looking to go over 500RWHP/RWTQ, if I can get there with this setup)

Thanks in advance for the response(s),
Lonnie
__________________
2002 EB Coupe, MN6

Xtreme TTi Twins @8psi, Dual A-pilar gauges - fuel&boost, x-pipe, Borla Stingers Quad Oval/no Cats, Hurst Short Throw, CCW 3 piece rims - 18x9.5/275-35 and 18x11.5/335-30 Pilot Sports

Drive it like you stole it!!!!!

[lplott]

ttt

Is there some reason that I am not getting a response to this question?

Wrong Forum?
Too many questions?
Too complex?
No one knows the answers?
Other more important questions to answer?

Thanks in advance for any/all help.
Lonnie

[MN C5]

1. Turn off the after CAT O2 sensors?

Yep or Simms

2. With the after CAT 02 sensors turned off, would this be considered 'open loop' or will the pre-CAT O2 sensors make it 'closed loop'?

Can still be closed Loop or Open depending on what you want

3. What AFR do you try to achieve for your street tune?

Cruise 14.7 WOT 12.8

4. How lean do you tune for race events?

12.8

5. With my setup, would going to AutoTune, MAFless SpeedDensity, and a WB O2 sensor be worth the effort/expense? (note: not really looking to go over 500RWHP/RWTQ, if I can get there with this setup)

Yes and Yes

[joecar]

2. With the after CAT 02 sensors turned off, would this be considered 'open loop' or will the pre-CAT O2 sensors make it 'closed loop'? (curiosity question)
Closed loop uses the pre-cat O2S's; you can opt to run closed loop or open loop in the .tun.

The after-cat O2S's are for testing the cats' operation.

[bink]

What is a
TTi Stage 1? Twin Turbo setup? Stage 1??

[BowlingSS]

What is a
TTi Stage 1? Twin Turbo setup? Stage 1??

I want a Turbo if it did not cost soooo much!!!!

Bill

[lplott]

BowlingSS

What is a TTi Stage 1:
Turbo Technologies Inc
Twin Turbo Stage 1
GT25 turbos
8psi
twin intercoolers
twin K&N air cleaners
single large adjustable Blow Off Valve
stock MAF
approx 480rwtq/466rwhp

Lonnie

[BowlingSS]

Thanks. What HP/TQ increases did you see?

Bill

[lplott]

Without the sheets in front of me, I seem to remember numbers like:

160 +- rwhp gain
180 +- rwtq gain

If you want it more exact I would have to dig up the dyno sheets from the install...

From what Mike at Xtreme has told me, my kit makes a little more power than most TTi Stage 1 kits they have installed so these numbers might be a little off.

Lonnie