Tuning not yielding increased ET's

[fastforever]

Hi Folks
I have a problem maybe some out there has already encountered.  I have a 2012 SHO pp that ran at PBIR last year on just a Torrie tune, of 13.02 @106. 60 ft times of 1.82-1.90. Not bad.
However, over the last year I have added a 170 t stat, plugs, 3bar, 50/50 methanol with a #10 jet and progressive controller,  and have recently had Torrie do some custom tuning with my data logs. Torrie has added all kinds of boost, almost  to where there is no more room.   PROBLEM is my times were slower than ever the other night: 13.19 at 105mph and 1.96 60 ft. My fast time were one cool evening, 12.96 at 106mph.
ANYBODY know whats up??   This should be running much faster.  I do have complete stock exhaust though.

THANKS
Mike

[AJP turbo]

Do you know how much boost you are running? The problem most likely is the 3 bar tune that you have.....Just kidding...(inside joke)

But seriously that sucks. Did you leave traction control on? Curious how much boost you were actually running. I don't know anything about the meth but many here do but can you overspray the meth and bog it down or anything? I've never used the stuff.

[fastforever]

Not really, all Torrie said was that I was now close to the limit of stock turbos. He cannot see any reason for this on my data logs.

[AJP turbo]

Do you brake boost when you launch? I would imagine you are somewhere around 16-18 psi but that's just a guess. I agree you should be running better

[fastforever]

I sure do brake boost. however anything over 2200rpm just brakes the tires loose.

[SHOdded]

Should be into the 12s easily with that mod list.  2000 is the generally accepted launch rpm for tuned EBs, 22-2400 for stock.  Are you experiencing any problems in your normal day to day driving?  Checked for loose clamps on piping/split piping?  How long since you last loaded the tune, i.e., enough time for the relearn to happen?  What tires are you running (stock/newer?)?  Michelins from the Gen 4.1 are susceptible to sidewall cracking.

[ZSHO]

I could see part of your issues being based on your 60ft times at 1.96 to blame,what tires are you running with?i is there 93 gas available in your area,check your AFR readings!!any hesitation issues like SHOdded mentioned,related to the meth install.

[IHeartGroceries]

The best best gains from WMI come from advancing ignition, not boost, especially on a small turbo(s), which is already operating in its range of efficiency. I know Unleashed has plenty of these cars spraying meth, and in the 12s, but I should hope that's how he tunes for WMI. It's very similar to the benefits of ethanol.

Bound to be an issue elsewhere.

[fastforever]

Thanks for all the replies.
I have checked all hoses, clamps etc. Car runs smooth with absolutely no hesitation. I run 93 oct always and have Conti DWS 255/45/20. I know they are .3 inches larger diameter than stock, but that is only 1.3% so it should not make much difference.  Torrie has not mentioned any problems in my data logs and I am sure he knows how to get the most out of spraying meth.
It just seems no matter what the mod is that somehow power is being bled off. Can the factory blow off valve stick? Can factory exhaust create too much back pressure for this set up?
I am not mechanically challenged and deal with turbo diesels all day long in my business, but this has me stumped.

[ZSHO]

I apologize for the stupid question,cause it happens to the best of us,are you certain your tuned for meth!! are you using one or two nozzles.

[AJP turbo]

can you actually confirm how much boost you are running? Can you read your datalogs? Also, do the 12' PP have the 3.16 final drive?

[SHOdded]

I apologize for the stupid question,cause it happens to the best of us,are you certain your tuned for meth!! are you using one or two nozzles.

Good point!  It might be that the meth install is not working properly or the ratio in the meth reservoir is not correct etc.  Details on the installed components/fuel please.

[fastforever]

Thanks for all your input. I have been sidelined with a back injury for awhile and have been too sore/lazy to think straight.   I recently installed a new progressive meth controller and it was trying to tell me something which I could not find, so I went back to basics today.
Checked meth pump output and it was very low and intermittent!  Traced it back to a plugged up meth filter, cleaned and reinstalled. Imagine that.......Lots of volume and pressure.  Live and learn.
I am going to try taking it out and data log again.  I'll keep you all up to date.

Thanks
Mike

[SHOdded]

Great to hear you fixed the issue!  Looking forward to some serious exploits

And, good call, Z!

[wasinger3000]

Good to hear you found the issue!