Well I finally got around to getting a tune and ran my buddies GTO again to see how much of an improvement it made. Im very disappointed!!!! Instead of me gaining any kind of power it seems that ive gained nothing at all.

Heres Round 1
http://www.youtube.com/watch?v=_zH7P0p0nVg
Round 2
http://www.youtube.com/watch?v=sxv_lTveec8

Round 3

http://www.youtube.com/watch?v=n4jK20QnLR8

 

jmo but rolling runs prove nothing in determining if your mods are working well. put it on a track and try.
also was the let tune a flash tune or dyno tune? you will get so much more out of a dyno tune. just as an observation the intake you have has ribs which disturb the airflow to the t/b.

 

it was just a reflash, but they told me it would gain me 30whp and 30-40 trq. and now im losing worse to my friend then i ever have. frustrating

 

Are you running an intake w/o a filter?

 

reflash from oem? was it a eurocharged tune? 30 hp from a current let tune doesnt sound right. from stock maybe, but with your mods you really need a dyno tune to dial the power in

of course you did pick the slowest color! you know black is the fastest color to have!

 

i dont think its 30whp on top of what you had with the code3 sc. They probably mean 30whp on top of stock.

I think the code3 sc with code intake dyno'ed around 34whp on top of stock with a tune. Without out the tune, the code3 dyno's around 20whp.


If your gonna race from a roll, i think you should go back to the duel intake setup. The single is probably better for off the line since you have more air velocity from the single setup.

 

seems like ur also suffering from a heat soak issue...the latter runs, he is pulling even faster. I currently have a DIY code3-like intake and it does really make the IAT temps higher, i'm thinking about going back to stock or the full SL55 splitter type.

As the above posts stated, its best to get s dyno/custom tune where ur a/f could be measured.

 

A. your intake is too restricting
or
B. the tune doesn't gain as much as you think it would

LSB smurf looking good tho

 

A. Its a full three inch from the throttle body, i hope it wouldnt be too restricting.

B. I think your right about this, I was expecting to gain 30whp on top of what I had and by everyones input, I guess I was mistaken. Time for a 185?

Thanks for the kind words Frank!

 

I think you're right about this, throttle response is alot better down low, but it seems to lose steam up top. Ill have to redo the race with the code3 intake and see if I get better results.

 

aho are you running the oem dual setup with the c3 intake filter at the t/b?
i have to disagree about running a single for off the line. the s/c setup wants massive air as much as it can get. spinniung at 16,000+ it creates its own velocity. thats why the best gains in intakes are the needswings full 3" dual setup with cone filters. the singlke was good but the dual blows it away.
it sounds like lean conditions with the 181 at wot just fine tuning needed

 

For those runs, i was running a full 3 inch from the throttle body. I have since put the stock airbox back on with the code 3 setup. I guess the single was too restrictive?

 

Get a 185 and Eurocharged headers.....you will be HAPPY....REAL HAPPY.
Waaaaaay more power than the Code3. Been there, done that.

 

the single is better than the oem but the sl55 is better than the single.
the c3 intake is a nice sound improvement but i lost power when added to my ram air setup, so off it came! power back!

 

Hi AHO, I am disappionted about your results, mod. C32 can do much better than that.
Where I live no track , but I had alot of steet racing almost every week with many cars models, and I smoked many mod. GTO, only one GTO mod. fully. with CAM AND NOS I couldn't !
I will tell some informations from my experience with C32 modification it may be helpfull :
About the intake system, keep the stock one with K&N filter only, I found out no much gain , only few HP in the begining when the car is cold !

First I bought complete SL55 intake system , I felt only some gain at high end but less in low RPM, but the trap speed no. by GT2 timer. and acceleration time in racing were the same.

Then I bought LET intake system, when the car is cold in the begining the car is runnnig well and throttle response is better but after 15 minutes and temp. out side is more than 70 F the car trap speed and acceleration are dropping and I couldn't touch the Aluminum Piping of the intake because it is so hot. I am sure AIT is getting so high with this intake, especially in hot weather .
The big gain in 185mm crank pulley + HE with tuning and get the headers , you have LT which is better than the short one I have now.

Try not to race the same car in the same time more than 2 times, I found the C32 performance is going low with frequent fast run even with big HE and new IC pump.
Start your race from dig or low speed less than 25mph cause the C32 has a good jump than most of the car I raced but make sure your tires are new and practice how to launch your car without spinning.

If you like street racing, you can tune your car for mid range speed not 1/4 mile tuning , this well be helpfull at high speed in fourth gear.

I am sure many members in the forum know all of this
Believe me the mod. C32 can kill many fast cars in the street which is unexpected by them . I have long list of cars my C32 has killed and I can talk about it later

E55:STOCK
C32:LET intake with ITG Filter
Eurocharged Headers
LET 185mm Pulley
LET Tune
C3P HE
CM30 Pump
Resonator & Rear Cat Delete.
NGK IX Iridiums
Magnecor 8.5mm Wires

 

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