TheBlurLS1

iTrader: (8)

I downloaded a few tunes from the HP Tuners bank and compared them. The '02 VE tables (stock and the modified) look much different than the '98's. I noticed there is no "Secondary VE" in the newer stuff, but what gives with the VE's construction.

I added a FAST 90 and 1-7/8 headers to my car and it lost about .4 and 5mph.

It reads lean as hell at idle, yet smells like someone is pouring fuel in. I've read that the overlap in the cam can cause false AFR readings by the PCM, as well as leaks (which I haven't ruled out). The cam is Futral F14 (232/234 .598 112LSA).

It's also reading lean on the top end as well, but the O2 MV's are 900+. I'm consfused and need a little help. I can post the tune when I get home for you guys to take a look at if possible. The car feels like it has alot more power left on the table, even if it's all in the top end, which I care most about.

Thanks for reading guys!

- Casey

TheBlurLS1

iTrader: (8)

I'd also like to add that I'm having the reoccuring TPS SES problem and the knock sensors were max'd out. I still have the factory '98 sensors, but I ordered new sensors/harness today.

Another possible reason for the knock is that the clutch on the a/c compressor exploded a few weeks ago and has since been letting me know about it.

jimmyblue

iTrader: (11)

You using a wideband to criticize the closed loop
fueling or just taking the narowbands' word for it?
Because headers make them lie their little asses off.
The description sounds like false trimming at the
the bottom of it.

TheBlurLS1

iTrader: (8)

Narrowbands, but they are brand new Bosch 13111's.

I want to get a w/b, and have read about wiring it to the EGR pigtail to log on HPT without the Advanced I/O edition. Is this possible with a '98 (have EGR deleted with plug taped up and dangling). The Kooks y-pipe has bungs already in it for rear O2's, and would probably be a great spot for a WB on one side.


When you say false trimming, you mean that the O2's are bullshitting the PCM into dumping fuel on the bottom? The LTFT's are max'd out at times on the bottom with it still reading lean and smelling like a gasoline spill. It also surges up and down trying to catch the swing on startup. I can tap the gas to level it off, but it goes WAY low if I don't at times. I don't really beleive it did this untill I put the new headers in, the old ones were coated Pacesetters.

SSpdDmon

iTrader: (10)

You need to pull quite a bit of fuel out of the VE for that cam. I can send you a .bin from an A4 I tuned with a TSP Torquer v.2 that might get you close to start. That cam has 232/234 595/598 112lsa and was done on an '00 A4. Shoot me an email to SAJ79 at aol dot com and I'll send it your way.

TheBlurLS1

iTrader: (8)

Email sent! Keep 'em comin' guys!

jmm98LS1

iTrader: (28)

That's how I have my lc1 wired up, seems to work pretty well.

Doc

iTrader: (9)

1) Are the heads/valves still stock?
2) What "reoccuring TPS" problem? Code
3) Knock sensors "maxed" out? How much timing being pulled and at what rpm?
4) The 99+up calibrations for the knock sensors are much more reasonable -compare
5) Get a wideband
6) Actually do 5

TAQuickness

iTrader: (28)

The difference in VE (primary) tables from '98 to '02 has mostly to do with the cam.

SUTTERERMAN85

iTrader: (42)

not trying to hi jack, but could someone PM me info on hooking up the WB through the EGR pigtail? i am in need of a WB and not sure which one to get and/or how to wire it up this way. sure would be nice not to have send $150 and my cable to HPT and have a WB that worked with HPT. thanks
nick

foff667

iTrader: (2)

I'll do you one better https://ls1tech.com/forums/showthrea...t=wideband+egr

SUTTERERMAN85

iTrader: (42)

thanks i searched and searched and its a sticky...go figure. im an idot i guess

Doc

iTrader: (9)

You said idot

SUTTERERMAN85

iTrader: (42)

yes yes i said idot and i meant idiot

TheBlurLS1

iTrader: (8)

Heads/valves are stock. The springs are PRC duals w/ Ti retainers. I put about 10k on them with the stock cam, and I've put about 13k on them with the F14, so they are probably on their way out.

I've read numerous posts about the TPS problem, I can't remember the exact code, but it was either "Intermittant high voltage" or "intermittant low voltage". I did the TPS reset, but it's still doing it.

I would clear all DTC codes and do a run. About at the 1/8 mile, the car would feel like it picked up 20hp and the SES light would come on, then the power would fall back off. After the run, the scan showed 4* of KR untill the point where the SES light came on, where it dropped to 0, then came back up again.

I'll check out the KS settings, do you happen to remember which table it was?

I'm definatly going to pick up a WB.



That's what I thought at first (6.0l cam in the 2002), untill I realized that even people with larger (aftermarket) cams still have roughly the same "style" graph, even after tuning. The VE has a peak, which drops back off in the 02ish cars in the upper RPMs, while the '98 cars just sortof plateau at the end and stay that way.

There was one 02 car that has a similar VE to mine and a stock 98 though.

Here's the one from my tune as it sits.



...and here's the one from another car, 2002 with H/C

AzzHauler

iTrader: (3)

On the fuel smell at idle, do you happen to have non-stock injectors? And looking at o2's for a wot afr are about as exact as using a crane to dig up a cup of dirt imo. KR sensors going crazy are not a good sign though.