Onyxd04Redline

At the wheels. I'm at 231 right now with just a mesh air filter . I have a weapon R header/DP and a custom catback waiting to be installed. Is it realistic for me to think i'll hit 250whp on stock boost? How much torque increase should i expect with a tune and TM removal?

chevysalesman614

the exhaust should free up like 15whp maybe 20

tum_tum

you gotta remember 4 bangers are not like v8's when it comes to exhaust mods..they get way more gain then 4 bangers

Onyxd04Redline

So i should hit my goal of 250 on stock boost. Sweet. Thanks chevy

R&C_rallySS

I'm going to guess kind of low and say..

+5 whp on downpipe
+8 whp on header
+10 whp on custom exhaust

~20 whp with all of those mods.

So 230 + 20 = your 250 whp...good luck.

BTW, 231 sounds a little high for just a air filter...got a dyno or something?

Onyxd04Redline

Let me see how it comes out via camera phone

Shortbus

Just get it dynoed and find out, your not going to get a exact number. You have a dyno for 231 whp just with a mesh filter, i highly doubt your going to hit 250whp on stock boost.

Jimmys2007CobaltSS/C

iTrader: (1)

yea dat sounds right

CobaltSS313

yah you might hit 235 with all those, you got lucky with your 231 dyno with just a mesh filter.

Onyxd04Redline

It seems the sheet didn't make the move to arizona. I also thought the dyno was high but i chalked it up to a low 50 degree temp at the time of the dyno.

It's also just not a mesh filter. It's a full exposed cone with no airbox to inhibit airflow. I should have another dyno in a week or two. I need to get my header installed.

CobaltSS313

Yah a low temp day like that will net you higher numbers. My base dynoe was just with a drop in K&N filter with the stock airbox and I dynoed 210 whp.