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07-27-2007, 08:34 PM #1
best way to eliminate bogging on the start?
well have a A4 and seems that im not in the powerband till half way. is there any way to fully maximize my run on the start. and running street tires now but i even heard that runnning some DR's well make it a lil worse do to not spiining
please help out
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08-11-2007, 10:08 AM #2
same thing here, with our a4 and we do run dr,s. i sapose we need a high stall conv. leaving at a higher rpm well make alot of diffrende
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08-11-2007, 10:09 AM #3
what are u running in the quater mile?
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08-11-2007, 10:17 AM #4
- Join Date
- Aug 1999
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- Arizona
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- 51,364
Black- 383 Procharged & N20 Vert
You need a high stall converter to get you into your powerband sooner.
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08-11-2007, 11:10 AM #5
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08-13-2007, 06:43 PM #6
- Join Date
- Jan 2007
- Location
- New Orleans Suburbs
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- 36
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- 140
White- '02 Formula A4
What about stock guys? How high should I go? I've been taking off at 1100 rpms, can I go higher or is that good?
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08-13-2007, 07:24 PM #7
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- Apr 2006
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- Indianapolis, IN
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- 4,886
All Black- 83, 87, 02 All WS6 T/As
Go until the back end stands up... thats pretty much just before the wheels break loose...
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08-14-2007, 08:51 AM #8
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- Jan 2007
- Location
- New Orleans Suburbs
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- 36
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- 140
White- '02 Formula A4
Cool, thanks. No set RPMs though?
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08-14-2007, 08:52 AM #9
- Join Date
- Apr 2006
- Location
- Indianapolis, IN
- Posts
- 4,886
All Black- 83, 87, 02 All WS6 T/As
It varies per car.. just try a few things out and see what your specific car likes.
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08-14-2007, 10:56 AM #10
- Join Date
- Jan 2007
- Location
- Knoxville, TN
- Posts
- 1,095
B2300 (Fluffy) Retired- Plain-Jane Dodge Truck
Automatics do not 'bog'.
To get into the powerband quicker, a properly-chosen torque converter will do wonders.
Launching....with the proper converter, some sticky tires, and assuming you have no trans brake (most street cars don't), you'll get the most torque to the wheels the quickest by letting the converter 'flash' to near its stall speed. This is accomplished by being staged at idle, and when you're ready to go, simply going hard to full throttle. This applies the greatest amount of resistance to the torque converter, allowing it to spin higher initially, increasing the amount of torque to the wheels.
The downside of this is if you don't have adequate traction. At that point, "loading" the converter might help, as you won't hit the tires as hard (loading the converter means holding the brake while raising the rpm with the throttle).
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08-19-2007, 07:44 AM #11
- Join Date
- Mar 2007
- Location
- Minnesota
- Age
- 42
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- 596
83 Z28 new project- 98 Formula WS7-sold:(
I've found with my 3400 stall, about 1300-1500 rpm powerbraking is perfect for a great launch on street tires
TSP Torquer V2 cam, ported heads,fast 90/90 combo, LT's, 3400 stall, magnaflow CB, most other bolt ons, full suspension, t-top and HID conversion
422 RWHP, 384TQ
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08-25-2007, 06:13 PM #12
I bog really bad and I have 315 Nittos!! I have a 2000 TransAm w/3:23 on them and could only muster a best (You have no freakin CLUE how pissed I was!!)13.08,13.10,13.09@109.1 -110.3 w/2.0/2.1 60ft. AND STILL NO 12 SEC. TIMESLIP!!!! I just need to dig deep and foot that 4000 stall converter bill so that I can freak out why Im not in the 11's!
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08-25-2007, 06:27 PM #13
NUETRAL DROP AT 4500rpm!!
Don't be afraid of the bottle!!! Be afraid of your tune!!!
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08-26-2007, 07:16 AM #14
Hey yeah, Great idea!!..... NOT!!!!!!!!!!!!!
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08-26-2007, 01:38 PM #15
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