My 1/4 mile log....

[CR95GST]

RPMs O2v Timing

1st gear
3772 0.97v 12
4532 1.01v 10
5588 1.01v 17
6620 1.01v 18

shifting
6484 0.74v 30
5324 1.00v 11

2nd gear
4412 1.01v 9
4860 1.01v 11
5228 1.01v 13
5588 1.01v 16
6016 1.01v 17
6356 1.01v 17
6700 1.00v 18
7068 1.01v 18

shifting
6640 0.75v 34
5712 0.97v 13

3rd gear
4960 1.00v 11
5104 1.00v 12
5228 1.00v 13
5392 1.00v 14
5564 1.00v 15
5680 1.00v 16
5844 1.00v 17
6000 1.00v 18
6172 1.00v 17
6324 1.00v 18
6464 1.00v 18
6596 1.00v 18
6724 1.00v 18
6868 1.00v 18
6956 1.00v 18
7068 1.00v 18
7204 1.00v 19
7256 1.00v 19

Letting off
7384 1.00v 38
6784 0.68v 37

This run was made @ 16psi on my EVOIII Big16G using 550cc injectors, stock FPR, TT RX7 fuel pump (re-wired) full intake and exhaust, 93 pump gas.

1/4 time = [email protected]

I used my friends PLX wideband on that run and I my A/F ratio was around 10.2:1 the whole way. Judging by that and the O2 voltage, it looks like I can take some fuel out. Does it look like I'm REALLY rich to you guys? With a FMIC I would like to see 110mph trap speeds... My motor compression is good (162 in all four cyls). A good ET is a lost cause...

 

[KPWSerpiente]

You are running real rich and have a lot of room for removing fuel or maybe turning the boost up a notch.

-T

 

[crankbender]

Take a ton of fuel out and rethink your shift points. With the work done you will probably be faster shifting around 6.5-6.8k

Did i mention to take fuel out?????

 

[Tallen]

Duh, your rich.

 

[98spydert]

I've run way faster than that on my T25. You should expect way better with some tunning.

 

[pickens]

Only 101 mph. Maybe something else is wrong.

 

[12's]

Your o2's are very high. Usually you aim for the .92 range. Every car is different though. Mine likes it best at ~.94. Some 1gs like it at .88.

 

[CR95GST]

Originally posted by 98spydert
I've run way faster than that on my T25. You should expect way better with some tunning.

You've run faster or quicker? If faster, I would love to see a timeslip with a trap WAAAY faster than 101

 

[98spydert]

Originally posted by CR95GST
You've run faster or quicker? If faster, I would love to see a timeslip with a trap WAAAY faster than 101

Don't be an idiot. Everyone, including you, know what I meant.

 

[pickens]

Yea we do. You run faster than 101mph on a t-25

 

[CR95GST]

Originally posted by 98spydert
Don't be an idiot. Everyone, including you, know what I meant.

I'm not an idiot. There are trolls on every board looking to start crap, I didn't know if your post was one of those. That being said, I know my ET sucks...refer to the last sentence in my initial post.

 

[midnght]

With my 20G, I (once) ran a 15.2 at 108 mph with a 3.3 60'. Do you still think a t25 can keep up? His times and mph are not the real issue, it is his tune.


Go to a dyno and see if you can get a wideband shoved up your tailpipe and tune it nicely. Take a look at your true powerband in the end and you will see FAR better results in both your ET and MPH.

 

[CR95GST]

Originally posted by midnght
With my 20G, I (once) ran a 15.2 at 108 mph with a 3.3 60'. Do you still think a t25 can keep up? His times and mph are not the real issue, it is his tune.


Go to a dyno and see if you can get a wideband shoved up your tailpipe and tune it nicely. Take a look at your true powerband in the end and you will see FAR better results in both your ET and MPH.

Thanks. I've been using the PLX M300 Wideband ( www.plxdevices.com ). That saves me the cost of going to the dyno. I am lucky to have a close friend who doesn't mind letting me borrow it whenever. The only real thing I was looking for in this post was comments on my state of tune and what I should aim for. I only posted the 1/4 mile ET and MPH because that is what the log is from.

 

[midnght]

Originally posted by CR95GST
Thanks..... I am lucky to have a close friend who doesn't mind letting me borrow it whenever. The only real thing I was looking for in this post was comments on my state of tune and what I should aim for........ I only posted the 1/4 mile ET and MPH because that is what the log is from.

No problem.


People are quick to put people down in the 1/4 talk. The only reason I say dyno is because it is a safe place to let it rip. The track is another one, but you have alot more things to throw into the equation. Lighting up the tires and then gripping, just to light them back up(trust me I know the feeling). Get a nice steady pull, do some adjusting, pull again. You look real close to goal, shouldn't take you more than 30min to 1hour to get it to its right running state. Personally, I would tune to around 11.4-.5:1 on pumpgas just to be conservative. You want to target about 12.5:1 A/F ratio with race gas. Just make sure you are in the ball park. Go here for timing suggestions.

 

[CR95GST]

Originally posted by midnght
The only reason I say dyno is because it is a safe place to let it rip. The track is another one, but you have alot more things to throw into the equation. Lighting up the tires and then gripping, just to light them back up(trust me I know the feeling). Get a nice steady pull, do some adjusting, pull again. You look real close to goal, shouldn't take you more than 30min to 1hour to get it to its right running state. Personally, I would tune to around 11.4-.5:1 on pumpgas just to be conservative. You want to target about 12.5:1 A/F ratio with race gas. Just make sure you are in the ball park. Go here for timing suggestions.

Good deal. I'd like to get my car on a dyno soon. I'm just waiting to get the FMIC on so I can just do it all at once. I am interested to see what kind of HP number I can put down as well. My only goal for the car is 300whp which SHOULD be attainable.

PS- If Tallen here will get a bigger FMIC so I can get his, I will have it on in no time

 

[98spydert]

Originally posted by midnght
His times and mph are not the real issue, it is his tune.

Wow... thanks for telling me EXACTLY what I already said. Why is everyone with a litte bit of knowlege a troll on this web site?

 

[midnght]

Originally posted by 98spydert
Wow... thanks for telling me EXACTLY what I already said.

You're welcome.

Why is everyone with a litte bit of knowlege a troll on this web site?

Because everyone on here with no exprience is quick to post useless info. While the rest of us that have been around awhile can give first hand experience.




I wasn't posting direct toward anyone. I was simply proving a point that you already understood. There is no reason to call anyone a troll for giving "INFORMATION" that would help someone out. I gave an example of what I have done in my car to better prove the point you started with. I have had the T25 and now bigger. It's all good, I hold no nothing against anyone.