I just got HP Tuners and I have a question? When I step on the gas the Power Enrichment takes time too kick in? Is there anything in the program I have too change too get the Cobalt too go into open loop faster???? I have been playing with the HP Tuners for 2 days and can't figure out how too change it????

 

I dont know exactly what you mean,. Power enrichment is your air fuel ratio, Why are you trying to get the open loop faster? rephrase please

 

Well its takes a couple of seconds for PE too kick in when you hit the gas at 100% throttle....My buddys RL does it right away alot faster then mine is there something I have too change in the program (Hp Tuners)....???????? Thanx

 

alot of calibrations have not only a tps vs. rpm delay, but an rpm delay, a map delay, a delay timer in second, etc.

I would first say to post your file so we can take a look at it to see whats going on...and if you don't like the answer we give put a feature request in for the parameters/tables you believe you need access to.

I know with most ls1 based vehicles you just need to set the rpm delay to 0 & then it goes off of the tps vs. rpm table only.

 

I will give that a try and let you know how it goes......??? Thanx

 

E-mail a member called bigworm. It might take a day or two for him to get back to you but im pretty sure he can help

 

Thanx man.....

 

There is an enrichment rate setting which determines how long it takes for the desired enrichment to be reached. Also our PE enable RPM/MAP on our stock flash is set by the "Delay RPM" and "Power Enrich Enable Map" values on the Power Enrich menu.

 

perfectly stated. to expand on this, heres some example numbers

engine->fuel control->power enrich:

MAP: 15 (pe only from good idle)
Delay RPM: 0 (ie. no delay)
Enable RPM: 0 (ie. no delay)
Enrichment rate: 2.0 (max enrichment rate)
PE enable hot: 70's all way way seem to work well. this is to say, 70% peddle will give you WOT.

now when it comes to tuning otherthings and you need to "turn off" PE, just move the 'enable rpm' values to max.

 

i know this is a super old thread but are these values good on a turbo swapped car?

 

No. They're not good values at all.

 

what would you use here on a turbo car?

 

Nope!

Map: between 100-120kpa is a safe zone
Enable rpm: 2000 with your turbo
Enrichment rate: 1.5-1.8
PE enable hot: 65-70
PE Delay: 2500-3000 with your turbo

 

I run everything off of map with an rpm delay that varies for each setup.
Tps is a bad way IMO because 70% tps on a 3"m62 is far different than a 2.7" TVS... Even more variation for a snail.

I like keeping a 100-110 map value with a slow enrichment rate; like .1. Rpm delay anywhere from 2500-3000 on a gas car.

 

That slow of an enrichment rate? hmm.. I've had issues in the past with not hitting my targets fast enough with turbo cars when below 1.5.

Edit: I'm not saying you're somehow wrong btw. I've just had some lean tip in issues in the past when enrichment isn't aggressive enough.

 

btw I posted up in the other thread with a new scan tonight. The car is running great with the MAF dropped back to the original dyno tune numbers. It also hits full boost now with the turbo rebuild at 3600 RPM

 

Nice man! Just read the post.

Map: between 100-120kpa is a safe zone 78
Enable rpm: 2000 with your turbo 0(zero)
Enrichment rate: 1.5-1.8 .0200
PE enable hot: 65-70 100.0 100.0 85.0 85.0 80.0 75.0 65.0 60.0 45.0
PE Delay: 2500-3000 with your turbo 3000

Most of these values actually look fine. Map is a little low, but it's not dumping ridiculous amounts of fuel super early in the map range like bigworm had posted so it's more or less fine. I would personally up the Enrichment rate a bit and see how it goes. Start with a value of 1 and see if it helps you hit your targeted afr a little better. Enable rpm doesn't need to be set for zero either due to the lag you get with your turbo. Setting it that low won't really hurt anything as long as the PE delay is set where it currently is.

 

This is where I am right now. 0-8000 respectively
0.9502 0.9502 0.9502 0.9502 0.9502 0.9502 0.9502 1.0000 1.0400 1.0996 1.1396 1.1797 1.2432 1.2979 1.3555 1.4229 1.5527 1.6504 1.6777 1.6895 1.7148 1.7275 1.7275 1.7275 1.7275 1.7275 1.7275 1.7275 1.7275 1.7275 1.7275 1.7275 1.7275

I added 5 percent from the last scan i sent you tonight and it was a little better, would you go as high as 1.9? The turbo is coming on quicker so I am just scared to run it like this since I blew up my engine last year, my nerves are shot when I am tuning up the car.

 

It looks like you're targeting 10.8 on a gas scaled wideband, 7.7 true afr for e85 (.73 lambda) at 3500 rpms it looks like which is honestly a tad rich even with assuming your maf is scaled correctly allowing you to accurately hit your targets. What are you actually seeing on your wideband at tip in and once you hit full enrichment? I wouldn't go to 1.9 just yet. You may potentially over shoot your targeted enrichment and dump a **** ton of fuel which the pcm can't compensate for in open loop. Start at a value of 1 and see how the pcm and engine reacts to that first.

 

can you elaborate on 1? Like what my pe table might look like if you were putting in the numbers? Are you saying to lower the numbers across the table to 1?

 

I should have clarified, I use that low of a rate mainly on e85 blower cars.
I've only done one turbo car and left the enrichment rate wherever the zzp base had it, it's been a while I don't remember exactly what it was. The other values I changed to mine and it gave it a much more consistent ramp down to PE.

I'm not ashamed of the fact I don't have a ton of turbo swap experience yet, just offering help where I can

I know there are others that know way more about me than snails. Taylor is one of them. I'm not sure if there's anything he can't tune lol

 

I believe he meant your enrichment rate

 

^^This

Don't tweak the PE table if you're hitting your commanded afr when boost levels off in pe mode. Just increase your enrichment rate to 1 from the .02 where you have it now and see if that helps you hit targeted fueling better upon tip in. If you over shoot the target then lower it a tad, if it's closer that where it was before but still not quite quick enough, then crank it up a tad more. Just don't go right from .02 to 1.9 or 2. That's far too course of an adjustment.

 

thanks, I think so too but I think he means one across the board and add fuel as needed. That is why I was asking.

 

I think you're modifying the Enrichment EQ Ratio. What SS1 is talking about is the enrichment ramp-in rate. This one: