i have an 08 tl, w

-AEM cai
-J shift j pipe w/ cat
- greddy evo II full cat

took it to get dyno'd and the car is running really really really fucking lean. theres too much air flow for my ecu to handle because the mapping for the ecu doesnt recongnize all the shit i have botled on. So i basically need to get it tunes but there isnt anything made for an 08 TL!. Ik im not the first to have all these bolt ons. can anyone shed some light on this ???

 

Post up your A/F chart and your dyno plot/rpm's.

What were your A/F ratios at WOT?

 

PICS PICS PICS of the DYNO!!!!! I wanna see them

 

Did you pull the battery? If not, that will be a reason why your system is running lean.

 

pull my battery??

 

i had a professional place do it im pretty sure everything wwas done correctly

 

 

 

the black is the AFR ration the ratio, as you can see at about 5,500 it hiccups and the AFR fucks up all my WHP. shit blows.

 

basically i should be gettign roughly 280 - 290 whp, and prob about 240 lbs of tourque maybe even more. but right now basically im pushin my luck that i havent fried a piston yet. Fuckin gay ass ECU's on the TL's man haha

 

Is that Auto or MT? on an MT with the bolt-ons you have 259whp and 221tq is about right, with an AT that is great. I know a TL-S MT guy with close to what you have put down 269whp and 243tq on a dynojet, so for you to get 290 on a non-S TL you would have to go SC my friend.

 

Type -S or base, MT or AT???? Did you get the race/test pipe and delete the 3rd cat? Did you move the IAT sensor when you did the CAI install?

If you have test pipes:
It might be the 02 sensor being covered with fuel thats causing the car to lean out, or a faulty 02 sensor.

If you have/haven't moved the sensor:
1. If you moved the sensor, put it back to the factory position.

 

its an 08 AT base TL, and if i got it tune properly it would be at around 260 whp

 

and i got the pre cat deletes wit the j shift j pipe.

 

270whp***

 

the precat 02's are probably reading that the mix is to rich, did you get a CEL after installing them? Did you trick them by using the extended bungs?

 

whats a CEL ?? haha and ik there is a BUNG on it but its closed i think

 

oh no i didnt get a check egine light

 

The dyno graph (and associated A/F leanout) is with the RichV6 Precat Deletes installed ?

 

In reference to disconnecting battery to reset ECU.

 

It's kinda hard to read that graph. What are your A/F ratios by RPM?

 

well.. an 08 TL Base 5AT... should probably be making.... around....245-250whp (depending on the dyno)

something is very wrong with that dyno.. did they turn off your VSA when they dyno'ed it?? Was this done in 3rd gear with steptronic? why did it flutter??

looks like at 4800RPM (VTEC engagement point) the A/F dropped to 7 !!!!!!! check vtec, check the solenoid.... i dunno... something aint right..

the TL should have a nice smooth upwards curve, with a slight spike at 4800-5100RPM.... and should never really go below 11-12 A/F ratio

 

How is A/F being measured exactly? I've seen a number of older cars "retuned" to run richer, only to find that the exhaust system had leaks that caused the lean reading, and now the car is super-rich and runs like ass.

 

i would assume a tail-pipe sniffer

 

this is with richiev6's pre cat deletes and j pipe. my car hiccups in third gear, at around 5,500 rpms and liek it pins and doesnt wanna go past it... and then like finally it goes over it but this shouldnt be happening. but my AFR is off the charts its a fuckin shit show. there is no leaks in my exhaust its not even 5 months old yet. to tell u the truth everything was ok before the richie v6 installs. but i got noticeable gains off the parts. but now i cant open it up, im scared of blowin the pistons lol

 

how was the shop reading A/F ratios? You said that the bung was closed, did you put the 02 sensor there or did you leave it hanging?

 

did they pull the car in 3rd gear?? I have pulled my 5AT in 4th gear before (yields higher tq numbers) but at around 5k RPM, the car bugged out, stop pushing, and did a similar "hiccup"

 

yea man im running a lil lean too but no head probs....i just got the vafc2 for air fuel ratio control...vtec can stay the same i need the fuel control.... i got spacers intake j pipe and from that a straight pipe to the mufflers and an unorthodox pulley. acura retarded my timing a degree so nothing blows until i get my controller in....anyone know someone good in ny?...black i know u got someone =)

 

RPM in queens is awesome... www.rpmnyc.com

 

didnt read what everyone wrote but if you have cats, and they stuck a hanger looking thing in your exhaust (IT AINT ACCURATE)

accurate AIR FUEL RATIO can only be attained from a bung at the jpipe


edit I read now, you would need the air fuel ratio hanger looking wire whachamacallit to be shoved down the entire catback to have an accurate reading

 

thanks im gonna hit em up n see what they want for the tuning

 

Question I have is where is your data on air fuel coming from? In other words where did the numbers come from?

 

ouch :x

 

ripped the motor apart..... mechanical evidence

 

DING DING DING

racinghart03 has an air fuel ratio gauge handy and his car NEVER NEVER flipped or flopped even on 75shot of nitrous... on or off the bottle

his setup is full r-v6 and comptech catback, big bore throttle body and injen intake... stock sized pulley, sooo the question is are you graphs correct? (wire in the tailpipe)

 

I would make sure they reset your ECU everyone that doesn't gets issues but its usually only a CEL. I would make sure they didnt installed the defoulers on the top O2 sensors and only on the lower ones.
Like this


Dynoing automatics can be tricky I would take it some where else. If your car was really running lean your wideband O2 sensors would throw a code. These ECUs are very advance unless you are boosting it they will pretty much self correct for any bolt on.

 

hey richie are those modded O2's? and whats the HP/torque gain from thecat delete.

 

Agreed. A/F readings need to be taken from AFS1 B1 and B2. In other words pre catalyst. Only way to do that is to read off the CanOB2. Or have no cats and a second third Dedicated A/F sensor in the J pipe.

 

These precats are the bomb. No joke. No one who has installed them would disagree. Except Stillheres radiator. oops.

 

haha my radiator is a little pissed at the pre-cats too