Your tune needs work, maybe? All long tube manufacturers advertise those numbers.
Hey, buy my headers. You will also need an engine tune...... WOW 30hp after headers aaaannnnnnddddd a tune.
Its a tuning site, we know what happens when you move the O2s further down stream with long tubes. Well, what needs to happen anyway.
Last edited by Skinny Pedal; 07-05-2015 at 01:24 AM.
Honestly in open loop or PE not much at all happens from the o2 placement. My tune is just fine and my part-throttle air/fuel ratios are right where they should be. I have been tuning long enough I know how to fix the tune and adjust the transient delays for the 02 sensors as well as the proportional gains and durations.
I guess I should mention I got a 6.0L with a bent crank snout and a broken compressor mounting boss cheap today for those that think I am anti-LS. It is destine for a lightweight sports car where its potential can be realized.
I think it was funny that someone complained about my L31 using the 0411 PCM. Its alot better than the LT1 era PCM that my engine started with and it alone was responsible for a noticeable fuel economy and driveability gain over the black box. I am about to dip further into LS components and install the EFI Connection 24x kit on the old L31 and possibly drive by wire if I feel like digging that far into the harness.
You may also notice where GM did not have the US emissions laws to contend with they kept the TBI engines well into the OBD2 era and kept the old L31 well into the GMT800 trucks. You can buy 2004 GMT Silverados in Mexico that have the 5.7 L31 from the factory. Its definately not a bad engine and certainly cheaper for GM just couldn't pass our newer emissions standards.
I'm done. Circles are round and this one will keep that shape. An inevitable loop of awesomeness is sure to ensue. I think I have a better chance at hitting 200% NA VE than making headway in my own thread.
Edit
I have to ask. Do you have some type of impairment? It would really explain a lot and make me feel somewhat bad if you do. Its just that the way you are replying and the way you word things has me thinking something has to be up. I understand we all get fixed on some things but not to this extent.
Last edited by Skinny Pedal; 07-05-2015 at 07:32 AM.
This makes no sense. With your BS claims about easily annihilating the torque of a LS engine below 5k using a cheap small-block build, why would you want to run a LS engine for any street use???
Dyno queens aren't that fast on the street and often not that fast on a track either.
I think only a handful of people truly understand this and I've yet to find folks willing to share their knowledge. Perhaps you could visit Barry's "Idle BLM" thread under "GM EFI Systems." Several of us are running the 7427 ECM and could use some help understanding what changes are needed to eliminate surging when running headers and larger cams.
Gentlemen...I have to ask. Do you have some type of impairment?
A disagreement of opinion is fine but please keep it civil.
Thank you.
Just my 2 cents, but I think it's time to close this thread, nothing good is happening here anymore. Skinny Pedal and Fast355, you guys should probably refrain from commenting on each others posts for a while. This site is here to help people with EFI tuning and I've seen both of you make good contributions to that end, but that's not what's happening here. Agree to disagree and call it a day. Just my opinion.
I agree. I wanted to start a tech thread that quickly turned to an inadequacy thread.
I have piles of data here from everything we tested that I was going to share. Airflows, airflow math, cams/combos that didn't work................ But why at this point.
Last edited by Skinny Pedal; 07-05-2015 at 07:49 PM.
Bookmarks