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?

 

the exhaust should free up like 15whp maybe 20

 

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

 

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

 

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?

 

Let me see how it comes out via camera phone

 

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.

 

yea dat sounds right

 

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

 

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.

 

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.