patrick4588

well I got it done. my pipes did not line up as great as everyone on here stated. I bought the corsa x pipe as well and they did not mate up. was off by about an inch. my passenger side cat delete didn't have the nice bell flare like the drivers side, but its all on there. sounds good.

because its me, and my awesome luck. in removing the pass upstream o2 sensor, I guess either heat or something had basically welded this thing in. it came out, but not without pulling the threads from the stock downpipe with it. but not loosely. they are like cooked and welded into the threads on o2 sensor. so had to order a new sensor, which I will pickup today.

put the big daddy cel sims in the downstream sensors and all seems well. somehow didn't even throw an o2 code for the front sensor. and it drove fine, although I didn't get on it really just out of precaution.

0NORCAL-SS

Every single kit ive done to date has bolted up no problem. 1 inch off now im interested in. Please pm me pics if you have on install because this is first in over 400 sets ive heard of it being off 1 inch.

thanks

GeorgeR_Zed06

Maybe he didn't loosen the x pipe and readjust. That happened to me when I had the long tubes installed on my Z51. It seemed off and hit the tunnel plate but when the installer loosened up the pipe completely and readjusted it, all was good.

OP, I'm really considering going with the delete pipes instead of long tubes to save me about $500. How do you like them so far, is it loud AF?

0NORCAL-SS

its loud when in track but in eco still tame.

patrick4588

nah I had it on a lift, we had the new x pipe loose and hanging freely to move.

patrick4588

I know it. same thing I was telling the guy doing it with me. he kept saying nah its aftermarket, fit always gonna be off a little. but everything on here was smoothly it bolted up. ill have it back on the lift today to put the sensor in. but I really really don't want to unbolt it to show how off it was. we wedged a 2x4 between the two cat deletes to space them out far enough to bolt into the x pipe. but ill take pics to show the difference in the bell and donut gasket. I broke 2 u joints trying to get the last 2 bolts on passenger side downpipe off. nightmare. other than that everything went smoothly. I don't think its leaking, but ill double check on the lift today.

as mentioned below, in touring and eco its decently tame. but valves open is #racecarlife

Dporeilly

Did you thread the stud bolts out the top of the manifold side of the the flange to do this?

I plan to install without lifting the motor and am trying to figure out if I need new bolts or not.

Thanks

wagoetzmann

Lifting the engine is very very easy...loosen just 4 nuts and jack the engine.....so much simplier and quicker......

Dporeilly

And if I lift all I need to do is remove the nuts on the bottom and put them back on with the cat delete pipe?

wagoetzmann

Yep, done it several time .......just watch for the manifold gasket which usually stays stuck to the manifold.

patrick4588

cajunboyz

Uhmmm, Intersting

NemesisC5

GM 100 octane tune?

patrick4588

Dporeilly

Has anyone that didn't tune had problems with the car running lean? My local performance shop told me that might be an issue.

I have a grand sport

0NORCAL-SS

it does not run lean. Ive done numerous c7 base and gs and z06s. Deleting cats on either version of the c7s does not run lean. Yes the light comes on dash if you dont use 02 sims or tune it.

I would not sell this delete kit as no tune needed if a tune was needed.

0NORCAL-SS

4 kits in stock.

"BoneStock"

Can you use the borla x pipe with this cat delete or only the corsa?

8850

Should have bought your pipes in hind sight. I would not have rusty pipes now! Cheaper isn't always better.

https://www.corvetteforum.com/forums...ting-pics.html

0NORCAL-SS

im a dealer for afe. My pipes clear the lines/cooler better. The inlet is much more smooth on mine also.

Sorry to hear your issues