Warning: Illegal string offset 'html' in /home/nissansi/public_html/forums/cache/skin_cache/cacheid_3/skin_topic.php on line 380

Warning: Cannot modify header information - headers already sent by (output started at /home/nissansi/public_html/forums/cache/skin_cache/cacheid_3/skin_topic.php:380) in /home/nissansi/public_html/forums/admin/sources/classes/output/formats/html/htmlOutput.php on line 110

Warning: Cannot modify header information - headers already sent by (output started at /home/nissansi/public_html/forums/cache/skin_cache/cacheid_3/skin_topic.php:380) in /home/nissansi/public_html/forums/admin/sources/classes/output/formats/html/htmlOutput.php on line 127

Warning: Cannot modify header information - headers already sent by (output started at /home/nissansi/public_html/forums/cache/skin_cache/cacheid_3/skin_topic.php:380) in /home/nissansi/public_html/forums/admin/sources/classes/output/formats/html/htmlOutput.php on line 136

Warning: Cannot modify header information - headers already sent by (output started at /home/nissansi/public_html/forums/cache/skin_cache/cacheid_3/skin_topic.php:380) in /home/nissansi/public_html/forums/admin/sources/classes/output/formats/html/htmlOutput.php on line 137

Warning: Cannot modify header information - headers already sent by (output started at /home/nissansi/public_html/forums/cache/skin_cache/cacheid_3/skin_topic.php:380) in /home/nissansi/public_html/forums/admin/sources/classes/output/formats/html/htmlOutput.php on line 141
Tune check after exhaust diameter change? - Hardtuned.net
←  Nissan Silvia (nissansilvia.com)

»
Hardtuned Classifieds

Tune check after exhaust diameter change?

1.5J 180's Photo 1.5J 180 04 Feb 2017

Hey,

Recently had the exhaust changed on my 180SX and wondering whether I should have the tune looked at and retouched if needed to be on the safe side, given the increased diameter. Cautious as the car mainly gets tracked and is running near max injector duty cycle.

1.5JZ running 24psi on e85

Old setup: 4' dump and front pipe to 3' cat back (no cat) single cannon muffler

New: 4' dump into 3.5' from dump (no cat) and single straight through muffler

Cars running haltech boost control and wideband O2 trimming
Edited by 1.5J 180, 04 February 2017 - 09:21 AM.
Quote

Dose Pipe Sutututu's Photo Dose Pipe Sutututu 04 Feb 2017

Going from smaller to wider, from restriction to free flowing.. you won't need a check up at all.. the motor is breathing better and making more power/torque with less chances of knock.
Quote

1.5J 180's Photo 1.5J 180 06 Feb 2017

Thanks mate, wasn't sure whether it would raise the boost at all and lean it out a little maybe with less backpressure
Quote