First, my results LAST YEAR....

94 Octane, AEM Intake, Buschur Muffler Delete Pipe, Custom Dynoflash., boosting 17-18 psi and dropping to 15-16


Dyno Sheet




Timeslip with above mods and dyno sheet...




My results TODAY...

94 Octane, AEM Intake, Buschur Muffler Delete Pipe, Walbro 255, Buschur 2.5" Downpipe, Hallman MBC...boosting 21psi til redline and another Custom Dynoflash

Dyno Sheet



Todays time slip with additional mods and dyno sheet




Video here


I am pretty disappointed...Since my first mods and tune last year, I have added a 2.5" Downpipe and Manual Boost controller. I am boosting 4-5psi more than before and am producing 303whp/321tq....Why the hell am I not in the 12s with a 1.7 60' time and trapping 108-110mph??

I achieved my best 60' time ever but I lost some serious MPH in the 1/8....It's like my car dies




BTW, This in NO way is a personal attack on Al or his Dynoflash product. I am extremely pleased with my Dynoflash and would recommend it to anyone...I am just wondering what is up with my results

 

maybe your AEM intake was causing a lean condition and your car pulled timing like crazy, btw was this on racegas??

 

94 Octane both runs this year and last year...Actually it was 5-10 degrees cooler on this years runs....I was custom tuned both times with all mods including the AEM Intake.

 

looks like its from the first 1/8th of the track. your about 5mph slower. where are you shifting at?

 

2 different tracks?

 

Did you experience any tire/wheel spin?

 

The two different dyno types can't be correlated. Also, that first slip says November 15th. How could it be cooler in June than November? I blame weather conditions mainly. Remember, humidity damages times a lot more than heat does. I don't know what part of the country you're in, but your times should definitely improve in the fall.

Are you running the stock cat and midpipe? The stock cat is a pretty big restriction. No offense intended, but you do not have the mods to trap anywhere near 110mph with pump gas. Your time isn't that bad, though. When I had a Pruven test pipe, Buschur muffler delete pipe, and an SAFC with Buschur settings, I managed a 12.91@107mph in cool 65 degree weather. Was using an MBC at the time, and boost was set at 19psi, tapering to 18 at redline. I mixed in 2 gallons of 110 octane that day for safety. I think the test pipe and weather conditions definitely helped my times back then. Now, I have 60whp more than back then and would like a 12.40-12.50@111-112mph, provided my clutch doesn't give up the ghost.

 

Same track. Look at the slips more closely.

 

Yea, same tracks...Mason-Dixon Dragway in MD. Actually, last years run was on a warm November day...it was around 72-73 degrees. My last run last night around 10pm, it was 65 degrees with very little humidity.


Yes, ran the stock cat/midpipe on last year run as well as this years...added a 2.5"DP this year though


I pulled a 1.798 with very little tire spin


Well, on 2nd run I pulled a 1.7 60' and ran a 13.2@103mph shifting at redline

My last run...the time slip posed above, I shifted at 6500rpms...

Which leads me to this question....Looking at my last dyno sheet, it looks like I have peak horsepower at 5600rpms....should I have shifted at 6000rpms or below, since I ran 13.2@103 shifting at 7000rpms and 13.2@106 shifting at 6500rpms???

Like I said before, I am pretty disappointed especially because I am running 4-5psi MORE boost this year and my ETs did not improve and trap barely improved and my 1/8 time took a dump

 

If you're happy with the Dynoflash, I'd recommend an SAFC to help the car up top. You're peaking way too low. I peak at 6900 on my pump map and 7000rpm on my race gas map. I have a little bit less midrange (3500-4000rpm) pull than most Dynoflash cars, but dominate at 5000rpm and above where you land when you upshift.

If you short shift, you're losing the torque multiplier of your gearing and putting a band-aid on the problem. You need to complete your exhaust system and get an SAFC tuned on the dyno to make power where you can use it. Good luck.

 

GottaGoFaster, I'm posting this only for comparison purposes. What follows is a post of mine from seven months ago. I had the Turbo back exhaust (with high flow CAT and with muffler) and the Xede. It was just the off the shelf internet 93 octane map with no xflash. Honestly, if I were you, I'd be a bit dissappointed too. I was dissappointed that day not to break into the 12s.


Stage 1 minus 1/4 mile today (from Dec, 03)

The last time I dragged a few weeks back my car was completely stock. Now, I call my Stage 1 the Stage 1 minus because I have not yet installed my cam gears. It has never been tuned; I just bolted on the exhaust and the Xede. Like last time, I added enough 104 unleaded to bump the 91 to 93. This time, I was able to run the 93 octane map. I was at Carlsbad Raceway in San Diego County.

Today, unfortunately, my tank was still on full and I had a couple of extra things in car compared to a couple of weeks ago. I estimate I was carrying between 40 and 50 pounds more than the last time I raced. Other than that, EVERYTHING was equal: Weather was about the same, same drag strip, same lane, same high rpm clutch drop. I was really hoping to be anywhere in the high 12s, but I'm satified with my improvement. Here is the before and after Vishnu:

Stock.......................................... With Vishnu
.726.................reaction................. .591
1.989.................60 ft .................. 1.976
5.663.................330 ft ................. 5.48
8.776 .............. 1/8et .................. 8.42
78.92 ............... 1/8 mph .............. 80.63
13.719 ............. 1/4 et ................ 13.105
100.52 ............. 1/4 mph ..............106.66

But, as you can see, I did .61 secs faster and over 6 mph faster.

 

Well, I don't really want to make this into a Al vs Shiv debate. Yea, I am really happy with my dynoflash and right now, I really cannot afford any other tuning options.

Obviously getting rid of the 2.5"DP, stock cat/mid, Muffler Delete pipe combo and going with a 3" turboback with help.....but.....I want to know why my ET and MPH are like they are with the setup I have now. I look at 303whp/321tq and see 12s...especially with more power than last years tune...maybe I am looking through rose colored glasses?

 

Dynapacks pull the wheels from the hubs and inflate numbers. Also, its stupid humid outside right now. Those two things are the most truthful and real ones that I can come up with for you. Run the car at Pruven again.

 

you say you pulled 1.7 60 ft.
but come on 1.798 is 1.8.

with a better 60 ft time you would be in the 12's pretty easy as most people say if you gain 1 tenth in 60' you wil be 1.5 to 2 tenths faster on the end.

 

You picked up 27 mph in the back 1/8. That means you are definitely making the power. Figure out what's wrong with that 1/8 time and you should do 12's with ease. I hit 12.9 in ****ty track conditions with a 104 trap, so it shouldn't be too hard for you to get into the 12s.