13.9@99 full exhaust and intake, wtf??
12-27-2008, 07:14 PM
#1
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13.9@99 full exhaust and intake, wtf??
My best totally bone stock on an 80* night with a DA of 2000 I pulled a 14.3@95. Today was in the low 50's with a DA of 5-1000max, with a gutted ram air intake, LTs. auto/3.23 and a cutout open I only mustered a miserable 13.9@99. I have MT ET streets and they got my bro his 13.4@100 today (his mods ram air, tune, and stall). So with much better track conditions and an intake and full exhaust, I only drop .4 and pick up 4mph. On the way home we raced from a 65mph roll and even with all the jack stands, tire pump, battery charger, and 100lb jack, I started pulling on him. WTF!!!??!!!
Is this normal? Does my car have track anxiety? Are header gains and cutout open only good from a roll? Is a stall and a pcm that much of a badass mod? Will I drop 6-7 tenths with a stall and pcm?
I'm wondering if I can take it to a dyno and do a mock 1/4 mile run and have them see whats going on.
Discuss
Is this normal? Does my car have track anxiety? Are header gains and cutout open only good from a roll? Is a stall and a pcm that much of a badass mod? Will I drop 6-7 tenths with a stall and pcm?
I'm wondering if I can take it to a dyno and do a mock 1/4 mile run and have them see whats going on.
Discuss
12-27-2008, 09:04 PM
#3
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Location: Milledgeville, GA
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Call it ~40 hp (going by traps) from intake & exhaust mods -- I'd call that successful. Improving the breathing helps but it isn't like a supercharger or anything.
Without the ET Streets you may have gained 1-2 mph on the big end but your ET probably would have suffered. What kind of 60 do you cut on regular radials?
Until you're making massive power, the dead hook of the MT's may actually hurt your times when compared to a little spin from radials. All of this is moot when you get the converter installed; then you'll need the extra grip from the MT's to keep from going up in smoke at the line.
Still, try it both ways and see which works best for you.
Without the ET Streets you may have gained 1-2 mph on the big end but your ET probably would have suffered. What kind of 60 do you cut on regular radials?
Until you're making massive power, the dead hook of the MT's may actually hurt your times when compared to a little spin from radials. All of this is moot when you get the converter installed; then you'll need the extra grip from the MT's to keep from going up in smoke at the line.
Still, try it both ways and see which works best for you.
12-28-2008, 02:57 PM
#4
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Join Date: Apr 2007
Location: Az
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Call it ~40 hp (going by traps) from intake & exhaust mods -- I'd call that successful. Improving the breathing helps but it isn't like a supercharger or anything.
Without the ET Streets you may have gained 1-2 mph on the big end but your ET probably would have suffered. What kind of 60 do you cut on regular radials?
Until you're making massive power, the dead hook of the MT's may actually hurt your times when compared to a little spin from radials. All of this is moot when you get the converter installed; then you'll need the extra grip from the MT's to keep from going up in smoke at the line.
Still, try it both ways and see which works best for you.
Without the ET Streets you may have gained 1-2 mph on the big end but your ET probably would have suffered. What kind of 60 do you cut on regular radials?
Until you're making massive power, the dead hook of the MT's may actually hurt your times when compared to a little spin from radials. All of this is moot when you get the converter installed; then you'll need the extra grip from the MT's to keep from going up in smoke at the line.
Still, try it both ways and see which works best for you.
I only went up 1mph from 2800' to 1000' So you gained a MINIMUM 30 whp.
We should have put my tires on your car for a run to see what that did for you.
Your car just has stage fright. It makes no sense that you can pull me at ease on the street so easily and trap lower. No sense at all.
12-28-2008, 05:24 PM
#6
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His car REALLY lagged off the launch. It took forever to get to where it seemed to want to make ANY power.
I've driven his car on the street before and it seemed underpowered on the track. I wonder if the DRs slowed him down. I haven't driven it with DRs before.
02-11-2009, 02:34 PM
#9
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Location: Atlanta, Ga
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What was the 60 foot on the before/after runs? Probably needs a tune pretty badly, and perhaps it bogged really badly off the line w/ the DRs. My 94 Z28 woke up a good bit after adding the MadZ28 tune and LT4KM after the headers.
The stall in the other car would make a huge difference at the track, much less so on a highway run so the raw power difference made the primary difference there IMO.
Could be alot of things if it is still an underperformer, timing getting pulled due the noise from the cutout being detected as knock, something like the tranny slipping at the track, etc...
The stall in the other car would make a huge difference at the track, much less so on a highway run so the raw power difference made the primary difference there IMO.
Could be alot of things if it is still an underperformer, timing getting pulled due the noise from the cutout being detected as knock, something like the tranny slipping at the track, etc...
Last edited by Ray86IROC; 02-11-2009 at 02:36 PM.
02-11-2009, 03:04 PM
#10
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Well, a regal was on the loose and took out the 60ft light that morning. But back when my car was completely stock, the best 60ft it could muster was a 2.1 but the psi was at like 17. Way to low. IT just had to much traction.
A MadZ28 tune is coming up soon.
A MadZ28 tune is coming up soon.
03-28-2009, 08:31 AM
#14
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You might not have enough power for the ET Streets (really need over 400rwhp for them to be a benefit over Nitto 555R 275/40/17s) and they could be hurting you and killing your MPH. Also the fact that they are a true 26" tire and you're running 3.23s doesn't help. That puts you somewhere around a 3.08 gear with stock tires I'd imagine.
03-28-2009, 12:15 PM
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You might not have enough power for the ET Streets (really need over 400rwhp for them to be a benefit over Nitto 555R 275/40/17s) and they could be hurting you and killing your MPH. Also the fact that they are a true 26" tire and you're running 3.23s doesn't help. That puts you somewhere around a 3.08 gear with stock tires I'd imagine.
Thats what we determined awhile ago. But damn, they are consistent.