Please go to post #54 for update and to give feedback if you would please!


So I have only been tuning for about 8 months now but am starting to think there is something I am missing. About two years ago on 20 psi before the manifold, o2 dump, or intercooler she put down 328.6 on a dynojet. Now with everything in the sig I can't seem to get over 300 at 21 psi. Please take a look at my maps, logs and virtual dyno graph and let me know what I am doing wrong. 91 octane, 5800 ft. elevation about 85* outside and 21.1 psi. Let me know guys, thanks. P.S. sorry for the two part log snap shots, I couldn't get the logs to attach

 

Here is the second log, someone please help me out, it doesn't make sense I dropped so much in power.

 

Anyone? Please?

 

I know little about this stuff, so consider this more of a free bump:

1. Does the car feel slower? Remember, you are comparing a dyno to a computer program. One could be reading 10% higher.

2. You should upload and log/graph the old tune that made the 326 and see where it puts you with the virtual dyno, as I'd think it would be about the same hp if not more, by only adding a dump, exhaust manifold and ic. This will give you a good reference point.

3. If i'm not mistaken, i think that megan exhaust manifold is actually taking power away. You should search and see what you find on that piece.


Good luck

 

ok 2 years ago what was the intake/ambient temp you did the dyno pull? same altitude? do you have a WOT log from 2 years ago?

 

Thanks for the input, I appreciate your reply. As for #2 I put a pull from march on the old tume and in vdr it was 330. The original tune was done Nov 2008 air temp was def different. The exhaust mani is next on my list to replace, I didn't know too much when I got it but i learned my lesson. Thank you again.

 

Air temp was different, no doubt about that. Same altitude, and no unfortunately I don't have a log from back then. How do my logs look? Is there changes that i can make to increase power? Should i just keep increasing timing? I know the basic idea is to keep increasing timing until knock then back it off, it just seems I lost a lot of power for adding quality cams and front mount.

 

Your timing is extremely low for your altitude. Even for 91 octane.

 

he is also pulling timing because of high intake temps..

 

93 degree's isn't that hot. He has a ETS FMIC which should handle those temps just fine.

I'm telling you there is major power to be had with timing on his setup. Your a lot lower then we are and we can use more timing at the higher altitudes.

Also why are you limiting yourself to 21 psi?

 

yes 93* isnt that hot with a good i/c BUT the ecu has a "safety" parameter were it pulls timing for certain temps... 93*being the 1st of 3 high temp parameters.. since your ecu cant calculate i/c efficiency it has nothing to do with this. look @ his map and his log and you will see that timing is pulled for no reason.

 

I am at 21 psi because I thought that was all that was safe on 91 octane. What is a safe amount of boost and timing to be running with my mild setup? Also what should I be looking to keep iat under? The prior tune I had was running 16* at redline but after research that seemed dangerous. I know tuning takes time but i thought I would be able to pull more power after the cams anf front mount.

 

why is load so low?

 

So are you saying I am maxed out due to iat reguardless of any timing changes that are made because of the safety feature?

 

no i was saying you may have lost power due to the ecu pulling a * of timing due to temps.. thats all..

it does not "limit"