dear jesus why is my car slow?

[moonstation2000]

went to the track for the first time this weekend and ran a 14.03 @ 97.69. 60' was 1.847.
my car is awd with big 16g, 93 oct, 560 cc inj, 20lb boost, o2's around 0.9-0.92 all the way to redline, no knock, 3" exhaust, no cat, dump tube. car runs pig rich at idle and cruise but i figured my wot o2's were good.
got beat by a srt4 which ran a 13.53.
why is my car so damn slow for my mods?

 

[u6t9]

what are you using to tune it?

 

[kpt4321]

98 mph should get you into the 13's, with a little more driving practice it will.

Are you still on the SMIC? If so, try more like 18 psi.

Do you have a datalogger? A SAFC or MAFT?

Also, have you pressure tested for boost leaks?

98 mph really isn't terrible for a 16g on pump on a SMIC...

 

[moonstation2000]

i have a pocketlogger. And i have an upgraded side mount ic. boost is good, no leaks last time i checked.
i know my driving could improve, it was my first time. but i still expected the car to be faster.
my computer has a keydiver chip installed, but i think i'll be getting an safc soon. i didn't think it would matter at wot due to my o2's being ~.9.

 

[kpt4321]

Was the car getting any knock? You have a logger...

If it was knocking, then you need to fix it. If it was not knocking, you need to find out how conservative you are and possibly fix it.

Turn the boost down a little bit and tune, and then start turning it back up.

 

[moonstation2000]

No knock

 

[kpt4321]

Have you pressure tested for boost leaks? You could have one, causing you to be too rich, and go slow.

There are really only a couple MPH to be gained...

 

[sp00ln]

I bet it's the chip. Get an AFC.

 

[moonstation2000]

i was thinking afc too, then i could lean things out a bit.
now i also need a new boost controller, mine was stolen last night. thieves suck.
more money to spend on my car.

 

[kpt4321]

I bet it's the chip. Get an AFC.

How would the chip make it run badly? It's no worse than stock...

 

[sp00ln]

How would the chip make it run badly? It's no worse than stock...

Im just saying that it's running slow because of the chip and it's not a fine tune. It's prolly dumping alot of fuel (or not enough) in the car. I bet if he gets an AFC and tunes it up a bit the car will feel a whole lot different.

 

[steveVR4]

Fuel pump? AFPR? If you really are running that rich (255 pump and stock FPR) you could see a big improvement by getting that fuel pressure under control.

 

[Turbo Monk3y]

Fuel pump? AFPR? If you really are running that rich (255 pump and stock FPR) you could see a big improvement by getting that fuel pressure under control.

yeah thats for sure i was running high 13s and 14 flats with a t-25 then i put in a small 16g a while back along with a fuel pump and ran constant 14.6-14.7s with the 16g... Got a Aeromotive AFPR and now im mid 13s at 15-16 psi

 

[kpt4321]

Overunning the stock FPR (big pump) doesn't effect how much power you will make at full throttle.

 

[sp00ln]

Overunning the stock FPR (big pump) doesn't effect how much power you will make at full throttle.

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