from 4 years ago, and no I have not seen any data for the secondary cat deletes. if you can post GTECH or dyno.
Quote:
Originally Posted by EFI Tuning
I have the CA deletes on my vehicle. I installed them more for easy wideband access more than anything. There is a little bit of power to be gained at the top end but nothing earth shattering. From 6000-6500 RPM there was a 5-7 RWHP gain (stock tune). The car does get louder without the primaries. The secondary cats may be holding things back a bit. If I wasn't going to install headers soon I would test it out.
The knock sensors absolutely needed attention on my vehicle. A resonance gets created in certain RPM spots on certain cylinders that excite the knock sensors significantly. It is completely addressable.
If you are interested I can supply a completed tune for E85/CA delete and the E85 kit itself.
Please let me know if you have any questions!
Tim
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Quote:
Originally Posted by TSloper
Red - stock cats/stock tuning
Blue - pipe delete/stock tuning
Orange - pipe delete/my tuning
The delete pipes show that the factory cats aren't a huge restriction on a stock engine. There is some to be gained past 6K with the reduced backpressure but nothing earth shattering. For $300 is beats a ported TB.
Tuning is really needed to maximize the bolt on path. These are all with the stock intake manifold and no other mods.
Attachment 790246 |
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Forged short block, large duration sub .600 lift Cam Motion cam, 7200 RPM fuel cut, Pray Ported Heads, 3.85 pulley D1X, stage II intercooler, DSX secondary low side, DSX E85 sensor, Lingenfelter big bore 2.0 pump, ported front cats, 60608 Borla, LT4 injectors, ZL1 1LE driveshaft and Katech ported TB, ported MSD intake, BTR valvetrain, ARP studs, ProFlow valves, PS4 tires.
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