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Full tune of 68HTA, KSTech 73 MAF, Racer X FMIC and DW750s


LittleBlueGT

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Impressive numbers and that is some tremendous spool. Have you added meth yet?

 

It's really shocking how bad your gas is. 14 degrees of timing in the upper RPMs is well short of where you should be with Torco.

 

This was not a torco tune, I didn't change the timing at all from pump, I just wanted to max out the MAF on pump gas so I could scale the intake properly.

 

FWIW my car is not the only one that runs like crap on our craptasticly crap gas. On 90 octane gas south of the border I can run an extra 4 degrees of timing, and possibly more, just never tried.

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That is AWESOME. I love every bit of it...spool, torque and HP. :wub:

 

So this is equivalant to 96 octane?

 

In all honesty I would compare it to 93 octane, it was not much torco, just enough to avoid knock so I could scale the MAF, the whp would have been higher if I had added timing. The 93 octane gas those that live in the NE get is way better then my pump+torco.

 

I would suspect an easy 360 whp if I really upped the octane and added back about 9 degrees of timing.

 

Meth is on the way!!! It is -30 out right now, but I doubt the car will ever get warmed up enough to do much tuning. Once it gets back to around 10F or so I will get the alky flowing!

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http://i248.photobucket.com/albums/gg194/littlebluegt/4thgearboost10F.gif

 

 

Notice how smooth my AFRs are. I found the OEM O2 to be very consistent. Not sure how accurate, but my gut is telling me it is pretty close.

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It is such a paradox man. You have super low temps that I only can dream of yet only have piss poor fuel available. On a side note, the AVO intake is only 70mm vs your 73mm so good pick on that. I'm guessing the limit on the AVO has to be about 350-360whp.
"Gimme mines Balboa...Gimme mines".....Clubber Lang - Mr. T
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In for some comparison graphs vs your old 380! Please!

 

 

I will put some up eventually. Suffice it to say it spools a few hundred rpm faster, and flows about 25 g/s more air.

 

I just wish the hta68 were a bb cartridge, as I know it won't last forever like the AVO380.

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In for the butt dyno vs. your old 380 too!

 

Little quicker everywhere, not a huge difference, but noticeable.

 

I wish the hta could have used the Perrin TMIC, I hate all those hose connections and T-clamps to get the TMIC off now.

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It is such a paradox man. You have super low temps that I only can dream of yet only have piss poor fuel available. On a side note, the AVO intake is only 70mm vs your 73mm so good pick on that. I'm guessing the limit on the AVO has to be about 350-360whp.

 

I think our fuel has gotten worse, as I used to be able to run good timing on 18 tapering to 15 psi at 10.8:1 AFR. (12 degrees to 20). Since Oct I just can't.

 

I think the 70mm intake would have sufficed, and anyone using an hta68 can feel confident that a 70mm intake is just fine. But why not?

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Don't underestimate the AVO intake. I'm running 22psi on a 20G till redline and I still have some headroom left. The highest I've logged is a shade over 4.80. I would expect you to run into problems at about 400WHP and higher.

 

It is such a paradox man. You have super low temps that I only can dream of yet only have piss poor fuel available. On a side note, the AVO intake is only 70mm vs your 73mm so good pick on that. I'm guessing the limit on the AVO has to be about 350-360whp.
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Don't underestimate the AVO intake. I'm running 22psi on a 20G till redline and I still have some headroom left. The highest I've logged is a shade over 4.80. I would expect you to run into problems at about 400WHP and higher.

 

What kind of fuel do you have available? I pull 4.78v @6500rpms on my AVO with FMIC 93 oct and no meth in 35 deg weather (10.8-11.0 AFR). I run 20.5psi tapering to 18.5. I know in the cold I would be really close to maxing it out with meth or race gas(providing I run higher boost).

"Gimme mines Balboa...Gimme mines".....Clubber Lang - Mr. T
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I run Sunoco 94 with a 50/50 mix of water / methanol.

 

You and I have slightly different results with the AVO. I just opened a few logs that I did last November in the 0C / 35F area. On a run that gave me a good 50-80 and 60-80 time (not my best but 2.69 and 1.83) my MAF only reached 4.70. That same run gave me 375/375 as per Airboy's spreadsheet and boost would have been holding in the 21 psi area till 7K rpm.

 

Earlier this year I also bumped up my boost to 25psi with some race gas for a trip to the track. I never did log MAFv, but I never got the dreaded CEL for pegging the MAF @ 5 volts.

 

What kind of fuel do you have available? I pull 4.78v @6500rpms on my AVO with FMIC 93 oct and no meth in 35 deg weather (10.8-11.0 AFR). I run 20.5psi tapering to 18.5. I know in the cold I would be really close to maxing it out with meth or race gas(providing I run higher boost).
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I don't understand why you guys talk about intakes and whp. The two are related, but it depends on soo many things. LGTpilot runs good gas + alky, and can run very high timing values, therefore (all things being equal) his whp/g/s is high.

 

You should talk about intakes and airflow.

 

FWIW I am flowing more air then LGT-pilot, I would imagine 10-15 g/s more, but am not at his whp level.

 

Maybe I should do an alky + torco run and run 16 - 28 degrees of timing, I think that would get pretty darn close to 380-390 whp.

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Got pics? I'm especially interested in the fitment of the heat shield...

 

Thanks!

 

I will have to get some, but it is freakin cold out!

 

It is the NICEST LGT CAI I have seen to date!

 

Very similar in concept to the AEM, but filter is almost as high as the K&N, it is a tight fit! It doesn't woooosh near as loud as the K&N, but won't have any possible water issues like the AEM has had.

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Here is my MAF scale:

 

Disclaimer; please feel free to use however you see fit and blow-up your engine, in fact I encourage it!

 

This was scaled in cold weather (although MAF comp IAT was changed to this:

http://i248.photobucket.com/albums/gg194/littlebluegt/MAFcompIAT.jpg)

 

http://i248.photobucket.com/albums/gg194/littlebluegt/KSTech73mmCAI.gif

 

Here is the code:

 

1.10   1.17   1.24   1.31   1.38   1.45   1.52   1.59   1.66   1.73   1.80   1.87   1.94   2.01   2.08   2.15   2.22   2.29   2.36   2.43   2.50   2.57   2.64   2.71   2.78   2.85   2.92   2.99   3.06   3.13   3.20   3.27   3.34   3.41   3.48   3.55   3.62   3.69   3.76   3.83   3.90   3.97   4.04   4.11   4.18   4.25   4.32   4.39   4.46   4.53   4.60   4.67   4.74   4.81  
2.40   2.98   3.71   4.49   5.49   6.70   8.02   9.40   11.1   12.9   14.9   16.8   18.9   21.4   24.0   26.7   29.6   32.6   35.7   39.0   42.5   46.3   50.4   54.8   59.5   64.4   69.6   75.0   80.5   86.2   92.6   99.2   106    113    120    128    136    144    153    162    171    180    190    202    214    225    236    248    263    279    298    321    344    370   

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I run Sunoco 94 with a 50/50 mix of water / methanol.

 

You and I have slightly different results with the AVO. I just opened a few logs that I did last November in the 0C / 35F area. On a run that gave me a good 50-80 and 60-80 time (not my best but 2.69 and 1.83) my MAF only reached 4.70. That same run gave me 375/375 as per Airboy's spreadsheet and boost would have been holding in the 21 psi area till 7K rpm.

 

Earlier this year I also bumped up my boost to 25psi with some race gas for a trip to the track. I never did log MAFv, but I never got the dreaded CEL for pegging the MAF @ 5 volts.

 

Airboy's sheet shows that I'm making 349wtq/325whp in 35 deg. temp. I would have thought that you would pull more air than me...

"Gimme mines Balboa...Gimme mines".....Clubber Lang - Mr. T
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I don't understand why you guys talk about intakes and whp. The two are related, but it depends on soo many things. LGTpilot runs good gas + alky, and can run very high timing values, therefore (all things being equal) his whp/g/s is high.

 

You should talk about intakes and airflow.

 

FWIW I am flowing more air then LGT-pilot, I would imagine 10-15 g/s more, but am not at his whp level.

 

Maybe I should do an alky + torco run and run 16 - 28 degrees of timing, I think that would get pretty darn close to 380-390 whp.

 

I see what you are getting to. I know he is running much stronger timing, leaner, and better fuel so he is making more power per combustion event than I am. Even if I could flow more air I don't make the same power per event...thx

"Gimme mines Balboa...Gimme mines".....Clubber Lang - Mr. T
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-6F, pump tune, 10.6:1 AFR, so far has been very conservative, no knock except the odd count of shift knock (just one count on the knock sum so far. IAT timing comp is adding 2.81 degrees of timing.

 

http://i248.photobucket.com/albums/gg194/littlebluegt/Pump-6Fgraph.gif

 

http://i248.photobucket.com/albums/gg194/littlebluegt/Pump-6Faccel.gif

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