New 1/4 mile times for my alltrac

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New 1/4 mile times for my alltrac

Postby vip09 » Sun Jul 02, 2006 4:25 pm

I was shooting for 14.0 or better on stock ecu/stock fuel system. I ended up with 13.92 @ 98.9 MPH. This was at 12psi boost.

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Best GT-S STOCK times: 1/4: 14.788 @ 94.98mph 1/8: 9.640 @ 75.87mph
Best Alltrac times: 1/4: 12.2 @ 115mph 1/8th: 7.9 @ 91mph
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Postby CMS-GT4 » Sun Jul 02, 2006 5:01 pm

Pretty good time for stock fuel.

What all you have done to it? I am guessing your a pretty good drive.
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Postby vip09 » Sun Jul 02, 2006 5:30 pm

Greddy TD06L2 20G Turbo kit w/ external wastegate, tubular exhaust manifold and 3" downpipe.
Block bored .040 over with wiseco 9:1 pistons and eagle rods and machined/polished crank
Stock head/cams
Stock airbox
Stock fuel system
Stock ECU
Best GT-S STOCK times: 1/4: 14.788 @ 94.98mph 1/8: 9.640 @ 75.87mph
Best Alltrac times: 1/4: 12.2 @ 115mph 1/8th: 7.9 @ 91mph
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Postby vip09 » Mon Jul 03, 2006 3:12 am

Is that time normal for my modifications? I have had some people telling me that I should be running faster than that. But I was thinking it was decent for 12psi on the 20G.

Also, I'm running an open downpipe with no exhaust at the moment. Does that make me lose any power?
Best GT-S STOCK times: 1/4: 14.788 @ 94.98mph 1/8: 9.640 @ 75.87mph
Best Alltrac times: 1/4: 12.2 @ 115mph 1/8th: 7.9 @ 91mph
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Postby Razzo » Mon Jul 03, 2006 3:44 am

vip09 wrote:Is that time normal for my modifications? I have had some people telling me that I should be running faster than that. But I was thinking it was decent for 12psi on the 20G.

Also, I'm running an open downpipe with no exhaust at the moment. Does that make me lose any power?


Sounds about right to me. And with the downpipe open like that, your getting the most out of that 12psi possible, if any it will make you faster
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Postby vip09 » Mon Jul 03, 2006 6:47 am

Well I do have a 47mm external wastegate, so it's not like i'd have to worry about boost creep anyway.. heh.
Best GT-S STOCK times: 1/4: 14.788 @ 94.98mph 1/8: 9.640 @ 75.87mph
Best Alltrac times: 1/4: 12.2 @ 115mph 1/8th: 7.9 @ 91mph
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Postby TomsGT4 » Tue Jul 04, 2006 2:11 am

Don't forget to change your sig!
Nice time.
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Postby vip09 » Tue Jul 04, 2006 7:08 am

TomsGT4 wrote:Don't forget to change your sig!
Nice time.


Thanks. Actually I ran the 14.7 in my '01 GT-S back when I was bone stock. I have a standalone EMS on it along with an intake and unbolted exhaust currently. Good for high 13's/low 14's.. so it's about equal to my alltrac right now.
Best GT-S STOCK times: 1/4: 14.788 @ 94.98mph 1/8: 9.640 @ 75.87mph
Best Alltrac times: 1/4: 12.2 @ 115mph 1/8th: 7.9 @ 91mph
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Location: Mobile, AL

Postby RafaCalde » Wed Jul 05, 2006 12:49 am

does anyone think i can get mid 14's with stock turbo, boosting 15 lbs, 550 injectors and fuel pump, using an AFC to tune it. i'm also planning on putting on my carlos sainz IC.
Rafa

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Postby EVcelica » Wed Jul 05, 2006 6:38 pm

I think if you got a better air filter it would make a decent difference, but those are good times.

Also mid 14's are possible with a good launch.
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Postby SuperWhite92 » Wed Jul 05, 2006 6:51 pm

RafaCalde wrote:does anyone think i can get mid 14's with stock turbo, boosting 15 lbs, 550 injectors and fuel pump, using an AFC to tune it. i'm also planning on putting on my carlos sainz IC.


Yeah, although be carefut with the AFC. Our Jetronic and AFC's tend not to get along very well.

With that said, I'll let you know I ran a 14.6 at high altitude (slower than sea level) with an upgraded CT26 46 trim, a 2.5" downpipe, and a boost controller set to 14psi. Even with a crappy launch.

EVcelica wrote:I think if you got a better air filter it would make a decent difference, but those are good times.


Air filters are almost worthless for power as long as whatever is in there isn't dirty. In fact, after a few hundred miles, even paper filters outflow K&N's
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Postby EVcelica » Fri Jul 07, 2006 3:07 pm

I'm talking about a whole intake system, not just a panel filter but one of our "straight intake" systems.
Talking about dirty filters reminds me that I need to wash mine.
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Postby RafaCalde » Sun Jul 09, 2006 6:33 pm

SuperWhite92 wrote:
RafaCalde wrote:does anyone think i can get mid 14's with stock turbo, boosting 15 lbs, 550 injectors and fuel pump, using an AFC to tune it. i'm also planning on putting on my carlos sainz IC.


Yeah, although be carefut with the AFC. Our Jetronic and AFC's tend not to get along very well.





why is that?
Rafa

1990 White ST185 w/ Carlos Sainz motor, ecu, and tranny
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Postby SuperWhite92 » Sun Jul 09, 2006 6:38 pm

RafaCalde wrote:
SuperWhite92 wrote:
RafaCalde wrote:does anyone think i can get mid 14's with stock turbo, boosting 15 lbs, 550 injectors and fuel pump, using an AFC to tune it. i'm also planning on putting on my carlos sainz IC.


Yeah, although be carefut with the AFC. Our Jetronic and AFC's tend not to get along very well.





why is that?


When tuning with an AFC and removing fuel (Adding is okay), the ECU will say "Hey look, less fuel=less load" and will advance the timing maps. As a result you get a lot of air without enough fuel, which equals a new motor.
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Postby RafaCalde » Mon Jul 10, 2006 11:25 pm

well other than a stand alone, what would anyone suggest i get to tune it.
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