Procharged wot af is 10.2 running meth boost set at 4lbs... I was running a 5" pulley getting 17mpg average now with a 4.5" pulley I'm having 8 to 9 average... 4 city and 15 highway... I drive 5 miles to work and spend 15 a day on gas... needless to say I picked up a 40mpg Toyota till I get this fuel issue figured out... trying to schedule dyno tune asap but with Texas mile a few days out that's out of the question till next few weeks... weird thing is a/f is 14.7 driving around town which leads me to believe its not tune related!?!? Little rich at wot but it doesn't see wot daily or weekly at that... any ideas

 

OH and my Chrome tips get solid back after a few min of driving.... aka rich...

 

where are you metering from? (where is the Wideband installed)?

You're running rich, some additional tuning looks to be required. 14.7 is pretty rich on decel/no load coast.

Who's doing /did your tuning? It needs some touchup.

 

It was all done via previous owner at rpm in N Carolina... most likely Danny from lethal performance in sa tx will do the clean up tune...

 

I'm sure he'll get it strait. I wouldn't spend any effort worrying until he gets it dialed in, you're on the safe side of problematic.

Good luck let us know it turns out, more power is in your future!

 

Thanks!!! Will keep this update with info as it comes in... car made over 700rwhp last tune... right now feels like 500HP and boggled out with fuel...

 

Yea it'll certainly feel swampy as all get out running that rich.

 

Couple things you should have NO boost when just driving normally like around town or on the freeway---your maileage should be much much better-even with 700 HP
IF you have long tubes you'll never get the stock AFR stoich ratio of 14.68 beacuse of erroneous data from your further back 02 sensors--- You also may have a "speed density tune" which is done on hi HP applications--A SD tune doesn't use the 02's or MAF to set the PT fueling --If you are using your MAF and 02's---You may be rich at WOT because IF you have positive fuel trims during PT-- that % is carried over to your WOT fueling as well as a safety--For example if your trms are +15% at PT "just before going to WOT" the ECM will add that 15% to your WOT fuel---a 15% fuel trim doesn't sound like much during PT but at WOT it's huge----
Find out what type of tune you have 1st MAF ? 02's yes or no ? They may be installed just turned OFF
Also--on a SD tune severve weather changes affect your fueling--
In cold dense air your engine will be leaner--more air requires more fuel
But in Hot weather with less air your SD tune is still commanding the same fuel amount making it richer---Small weather variations don't make much difference---But if it was 1st tuned on a super cold day--at sea level and now its really really hot like 100* and you are way above sea level--it will be PIG rich---

 

Yes sir, long tube headers, ms4 cam, 2 bar speed density tune.. tuned in north Carolina at 60F car is now in san Antonio tx today it was 95F... which would make since now the cold weather passed and were seeing this very hot humid weather.... made appointment to get tuned after Texas mile with lethal performance... they are Gods with these cars!!!!

 

Lethal did my driveability tune 10am to 5pm.. car is alot better need to wait till I replace throw out bearing to get some high horsepower numbers is... goal is 750rwhp currently at 720rwhp with restrictor plate to 625HP as It's still staying strong on stock block... forged 402 is in the works with hopeful numbers in the 850HP range...

 

Needless to say it was very rich at idle... hint bad mileage now average is 17.5 city and 24.7 highway

 

Take that you import supercar guys !!! 17.5 city and 24.7 hwy--
720 RWHP probably 3.0 sec. to 60'--10.00 11.00 in the 1/4 mi
maybe a top speed of 200 MPH
and still be able to go thru the drive thru on a late night !!

These are amazing cars-----

 

Much better, glad to hear things picked up