topped out in 5th
04-06-2007, 08:12 AM
#21
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Join Date: Aug 2006
Location: sc
Posts: 457
RE: topped out in 5th
ORIGINAL: cahtr6
I would be extremely careful going to boost in 5th gear the ford ecm goes very lean in 5th gear which could be disasturous under boost.
I would be extremely careful going to boost in 5th gear the ford ecm goes very lean in 5th gear which could be disasturous under boost.
I will talk to Chris Winters down at Crazy Horse Racing, he does my work for me, and writes for MM&FF mag, I'll see what he says about 5th gear under boost.
04-06-2007, 01:33 PM
#22
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Join Date: Aug 2006
Location: same as you.
Posts: 3,287
RE: topped out in 5th
and it doesnt JUST take Horsepower to get up 2 200mph... its all in the Aerodynamics how well the Vehicle slices through the wind... I mean look at bikes..... hey have like 140horsepower :-) the Weight/Horsepower Ratio is INSANE!!
04-06-2007, 01:40 PM
#23
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Join Date: Jul 2004
Location: Pittsburgh/Dayton
Posts: 3,062
RE: topped out in 5th
ORIGINAL: cahtr6
I would be extremely careful going to boost in 5th gear the ford ecm goes very lean in 5th gear which could be disasturous under boost.
I would be extremely careful going to boost in 5th gear the ford ecm goes very lean in 5th gear which could be disasturous under boost.
Whats it matter? The car has no idea what gear its in. The A/F is just goverened by the RPMS, maf, and tps.
04-06-2007, 07:10 PM
#25
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Join Date: Feb 2007
Location: Hawaii
Posts: 2,211
RE: topped out in 5th
I liked how the Bugati hunkered down when the driver hit the "speed" button. that is one cool @ss effect. anyone remember when the thunderbirds had that airbag system? I wonder how that could be applied to a Mustang.
04-06-2007, 07:21 PM
#26
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Join Date: Oct 2006
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Posts: 235
RE: topped out in 5th
ORIGINAL: czwalga00gt
Whats it matter? The car has no idea what gear its in. The A/F is just goverened by the RPMS, maf, and tps.
ORIGINAL: cahtr6
I would be extremely careful going to boost in 5th gear the ford ecm goes very lean in 5th gear which could be disasturous under boost.
I would be extremely careful going to boost in 5th gear the ford ecm goes very lean in 5th gear which could be disasturous under boost.
Whats it matter? The car has no idea what gear its in. The A/F is just goverened by the RPMS, maf, and tps.
You are correct in saying the computer in thecar doesnt know, but the engine has a bigger load placed on it because of the over drive and higher wind speeds putting physical resistance on the car( think of it as driving up a hill that gets steeper and steeper towards the top.) I know supras that make high speed runs in 6th have to be very careful about going lean even with a solid tune (with AEM engine management system), where as in 4th and 5th there is no issue. Think back to when you'd go up a hill in a crappy carand it'd start pinging. Due to the bigger load on the engine it would go lean, same kinda issue at hand here.
That being said, if you are doing 160+ in a mustang you have a pretty serious death wish.
04-06-2007, 07:34 PM
#27
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Join Date: Jun 2005
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Posts: 331
RE: topped out in 5th
ORIGINAL: cahtr6
I would be extremely careful going to boost in 5th gear the ford ecm goes very lean in 5th gear which could be disasturous under boost.
I would be extremely careful going to boost in 5th gear the ford ecm goes very lean in 5th gear which could be disasturous under boost.
04-06-2007, 08:54 PM
#30
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Join Date: Dec 2006
Location: Lynchburg, VA
Posts: 1,898
RE: topped out in 5th
ORIGINAL: Tylus
I seriously doubt your car can go that fast. My bud in a 2003 Turbo T/A with 495 RWHP can only hit 160-170 hp in 6th gear before he gets unstable and the car pretty much stops pulling. the cars are similar enough, that I'm betting you'd see a best of about 160 mph. on the other hand, another bud in a 98 S/C Vette can go 150 mph in 4th and still have 5th and 6th to play with. He's just too scared to run it any faster.
I'm trying to find a vid of Top Gear where they took a new Bugati to 253 mph. It took 1001 RWHP to get it there. Kinda puts things into perspective.
I seriously doubt your car can go that fast. My bud in a 2003 Turbo T/A with 495 RWHP can only hit 160-170 hp in 6th gear before he gets unstable and the car pretty much stops pulling. the cars are similar enough, that I'm betting you'd see a best of about 160 mph. on the other hand, another bud in a 98 S/C Vette can go 150 mph in 4th and still have 5th and 6th to play with. He's just too scared to run it any faster.
I'm trying to find a vid of Top Gear where they took a new Bugati to 253 mph. It took 1001 RWHP to get it there. Kinda puts things into perspective.