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Nothing is foolproof. Autotune, of course, is not foolproof. Would it save time, yes. It would save more time for some than it would for others. I have seen posts on this forum from HPTuners which...

I think that it is a given at this point that the guys just are not capable of providing autotune. I mean it has been so long in the "coming in a future release" phase that you have to feel that the...

I think that it is a given at this point that the guys just are not capable of providing autotune. I mean it has been so long in the "coming in a future release" phase that you have to feel that the...

Running lean at startup is normal. The air pump is blowing air into the exhaust stream which confuses the 02 sensors. Should stop after a minute or so.

So, how do you know you're running way to rich? How are you measuring the AFR?

Guys. I'm trying to follow along but I'm not quite getting it. I mean, the really high boost vehicles don't use a MAF. Why do you feel that boost without a MAF would be a bad thing?

Maybe you...

My SC is internally lubricated with no connection to the engine oil supply. It is also mounted in the right front of the engine just behind the radiator, not on top of the engine. The SC blows into...

Yeah, you're right. But If you live in a relatively mild climate area, where the temperature doesn't drop below freezing a lot, then I don't believe that the MAF makes much difference.

On the...

I don't understand why anyone wants to continue with the trouble of tuning with the MAF. Replace the MAF with a straight bellows, do your tuning, and leave the MAF on the workbench forever.

Just...

Hypothetically speaking - Should be ok.

The wideband must be installed before the CATS.

The wideband must be installed before the CATS.

I think I am going the direction of SD because the MAF does impede airflow which impedes performance. So I'm going to replace the MAF with a straight bellows. Then I'll play with the SD tune.

By...

So how much boost do you guys feel that a LS1 with stock heads and cam can handle?

The ATI procharger I'm installing has a bypass valve connected to the vacuum. As boost is applied, the valve closes. Seems to me that if I adjust the valve so that it is only half open before boost...

So let's see if I have interpreted this correctly....

1. SD tuning is only necessary if the MODS performed have exceeded the capacity of the PCM to control normally.

2. MAF tuning is sufficient...

I like the back to carburetor idea. How do you know if your VE table and MAP sensor can measure greater than 105 kPa? I think I did read somewhere that I need to replace the MAP with a 2bar MAP. But,...

Based on what I have read, seems like SD is the way most people are going for better performance. But maybe that is wrong. I haven't seen any comparisons as to the benefits of SD vs MAF. I guess it...

Thanks for the response. I've been working on my speed density tune following the SD instructions in this forum. I had to stop because I need an emissions inspection which has expired. So I'm working...

Did you include the Serial Number and the details of how you came to own this software? If you did, maybe you should try emailing Chris directly.

Your user id will be the serial number on the CD. The password will be the email address of the original owner.

I'm installing an ATI Procharger with 7 PSI boost. Do I really need to have the 2BAR support enabled to properly tune for this upgrade?

sounds more like a fuel problem.

Pam Andersons's Body = Great ;D

Your question is a little confusing which is probably why the responses are slow. Might be better if you stated what you are trying to accomplish i.e. what horsepower with what what fuel psi.

Just...