orbalt08

iTrader: (4)

What is this "venturi"?

IslangD

What are the best 3 mods in your opinion terminator If you have a stock car and you do 3 mods what will they be? Tune obviously. Downpipe. But what would be the third one?

Terminator2

Tune, Catless DP and IC with CPs. Cannot have one ithout the other IMHO.

The end of the snorkel. It acts as a velocity stack.

reign1

i need an intercooler

orbalt08

iTrader: (4)

Ah, I see. I wasn't aware of the proper terminology

Iam Broke

iTrader: (10)

From Wikipedia...with a diagram or two.

http://en.wikipedia.org/wiki/Velocity_stack

umrdyldo

iTrader: (1)

Quote:

"The acceleration of air flow into a duct is inherently a highly efficient process and the difference between even the crudest radius inlet, and the most aerodynamic shape possible is slight, amounting to no more than a few percent. The flow coefficient of a perfect entry would be 1 while the flow coefficient for a sharp edged entry would be .9. A difference of only 10% from the worst possible entrance to the best possible entrance. This does not mean that engine airflow would increase 10% as the inlet end is usually not the smallest part of the system. The actual overall gain would be much less."

IslangD

Thats 4 mods.

Iam Broke

iTrader: (10)

I logged a few 2nd & 3rd gear pulls on the way home tonight and compared them to last week.

Top of 2nd gear VE Airflow max flow values approx. 5800 RPM

Air box mod short inlet (no stack) last week IAT2 84*f, 27.83 lb/min

Air box mod with stack & 3.25" coupler to get it back into a CAI, IAT2 91*f 28.75 lb/min


3rd gear at approx 5800 rpm:

No stack IAT2 91*f, 27.02 lb/min

W/ stack IAT2 97*f, 27.78 lb/min

While not conclusive, it leads me to believe it flows a bit better with the stack added back on to the airbox with a 3.25" silicone coupler.

It was hotter out today so that accounts for the higher IAT2 temps. Same tune both times.

Term doesn't have the velocity stack on his.

Black08SSTC

iTrader: (1)

i put the stock airbox back on yesterday and i do believe i feel a difference without a doubt. I believe it pulls a lot smoother and the idle is a lot cleaner. I can put it in first at 1100 rpm and roll into the gas and have no lug. I dont have HPT so i cant log it and see the difference but it is definitely there

Iam Broke

iTrader: (10)

Reinstalled the AEM CAI tonight, flows are up a bit but it's cooler out. Good news is the 3* KR is gone also. 17* advance at WOT, 30 lb/min VE Airflow. Time to tweak the MAF readings again. I just like the CAI better I guess.

SSlobalt

My car is completely stock and it runs so differently from day to day that I can't imagine how you guys "feel" any differences in the small modifications.

orbalt08

iTrader: (4)

What about the flutter? How are you dealing with that?

Terminator2

I know but if you are going to get an IC you should get CPs and vise versa.

Iam Broke

iTrader: (10)

I have only noticed the flutter at cold idle. Since I looked at my logs tonight again comparing the K&N airbox mod to the CAI, I can't see it in there but I guess I don't know what to look for. :-/

Maybe mine isn't as bad since I have more back pressure from the catted DP & stock catback? I let it idle in the morning until the rpm's drop under 1k, then drive it.

I do notice the 'lurch' at throttle release is less with the CAI than the airbox mod & K&N. My fuel trims are still a bit positive though. (+1.6 LTFT's tonight)

orbalt08

iTrader: (4)

Not sure you can notice it in the logs, but I know you can hear it. I only had the intake done. Stock dp and stock catback as well. With the intake and tune it was just not working out for me.

ah665

ya i sorta feel the same way about my car.

its so hard to get a feel for the car. i just did an oil change (and i always change the air filter too at the same time) and instead of another paper filter for the air cleaner, i opted for a K&N drop-in. there is no way i can tell if it make the car run any different cause the car runs how it wants, at that particular moment. lol. i will get the GM stage 1 eventualy but i dunno what im gonna do about an intake, prob just use the stock box w/ K&N, as it is now. i really dont want the hassle of how finicky this car car. thats why i havent gone aftermarket w/ a tune. but it is a strong car in stock form, so its not like im dissappointed.

Gimpster

Altough you went with a K&N, remember not to clean it too often. Replacing your paper filters every oil change actually hurt your car more than it helps. If you do research, you'll find that filters have to build up a dust cake to filter properly. Without that.... it lets in quite a bit of ****. Ditto for a K&N.

If you're just after max flow, by all means replace paper filters often and clean the K&N too much. If you want the motor to not be high in silicon (aka dirt) follow the directions.

metroplex

Am I reading this right, about 27-28 lb/min with the stock airbox + K&N drop-in?
Sounds like the K&N SRI still might be the best route to go if it flows 32-34 lb/min??