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Performance Modifications for the NG900 / Old 9-3 This forum contains PERFORMANCE related Q&A's for the NG900 and 9-3. This may also include suspension.

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Thread: Exhaust Heat Wrap on DP..pics Reply to Thread
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Topic Review (Newest First)
03-16-2007 12:23 PM
VtAero
Quote:
Originally Posted by laxian55 View Post
tn, is prolly just different. i might remember that they sniff cars older than 96 tho, that is a stretch im not really sure. I wouldnt see the difference since we both are T5 and should have the same electronics. I might have to due with your car being over 10 years old as well. i dunno...
-95 don't have the port for the plugin, is it obdII? I have a '95 aero,always have had the sniff test
03-14-2007 04:32 PM
8valvegrowl I just got internets after two weeks of no TSL...i was going through serious withdrawal.

A few comments.

The wrap job looks nice, as does the paint. The paint will last about 30 seconds, but oh well. More importantly, I would say take the wrap off. Thermal wrap will warp the DP since it's just aluminized steel...you can't create those sorts of temps and expect the DP to last very long...unless you like spending $300 on a DP every month or two.

Secondly, the manifold is more important for heat flow in terms of spool and power production. Not the DP....that's post-compressor. The DP should be dumping the gases as efficiently as possible.

Thirdly, the thermal barrier should be INSIDE the exhaust tracts, not retaining heat on the outside. I would say that you'd be better served pulling the manifold, getting it extrude honed or some sort of port and polish scheme, and then coated internally with a thermal barrier like a ceramic.

But, if you do that, then you might as well get the turbo exhaust housing done in ceramic, and maybe the pre cat portion of the DP.

But take the wrap off. Believe me, it's doing very little except increasing the likelihood that the DP will fail sooner rather than later.

Just my $0.02
03-14-2007 01:08 PM
bozs13 Ok, I hope I answer some things here

I'm not getting a custom tune until I throw in a GT series a little later. Jak is going to throw a 9k tune on there and do some fine tuning from there. Once I go past the TD04 I'll be doing Nordic or SQR. I didn't get a bung because I bought this DP from someone on here (it's not new).
03-14-2007 12:04 PM
SAABOOST
Quote:
Originally Posted by CooperS7777 View Post
Im not consfused at all, but Boz is not getting a custom tune (to my knowledge) - just an in person tune for a setup most tuners have basic maps for and they generally just montior with a Tech-2.
No I word'd my comment wrong, it was supposed to say I'm alittle confused. Ok that's what I was asking him.
03-14-2007 11:42 AM
CooperS7777
Quote:
Originally Posted by SAABOOST View Post
Alittle confused? Don't take this the wrong way, it's just the way it's word'd but are you saying you know of a tuner that does custom tunes off narrow-band?
Im not consfused at all, but Boz is not getting a custom tune (to my knowledge) - just an in person tune for a setup most tuners have basic maps for and they generally just montior with a Tech-2.
03-14-2007 11:39 AM
SAABOOST
Quote:
Originally Posted by CooperS7777 View Post
Not all tuners do that, Im not sure who Boz has settled on or if anyone at all yet - but some simply dont.

Alittle confused? Don't take this the wrong way, it's just the way it's word'd but are you saying you know of a tuner that does custom tunes off narrow-band?
03-14-2007 11:38 AM
stevehayes01
Quote:
Originally Posted by Drew in Houston View Post
People will disagree, but my feeling is that you should be looking at EGT's pre-turbo anyway. There's too much delay and uncertainty measuring post-turbo.
I can agree with that.... if your doing it right then you would go manifold based..Most EGT's are post turbo and pre cat so you may not get the exact reading but you will get one that will give you a basic idea of where your at.
03-14-2007 11:36 AM
Drew in Houston People will disagree, but my feeling is that you should be looking at EGT's pre-turbo anyway. There's too much delay and uncertainty measuring post-turbo.

edit: yeah what everyone else said, meausure EGT pre-turbo. I type too slow.

Quote:
Originally Posted by stevehayes01 View Post
You dont even need the 2nd bung for EGT... You can use a drill in hose clamp style K type thermocouple for that. Goes in super clean and only puts a 1/4" hole in the DP.
03-14-2007 11:34 AM
CooperS7777 EGT belongs in the manifold, thats the only place its going to be truly useful for tuning.
03-14-2007 11:33 AM
SAABOOST
Quote:
Originally Posted by AeroDynamic View Post
yeah 2nd bung for a EGT but its not needed to run the car... i thought saabboost was telling him he needed it simply for when he swaps the motor which did not make any sence to me.
The EGT should be pre-turbo and the second O2 is for the wide-band. Once again my concern was him installing it and spending hours upon hours installing everything and then going to the tuner and they say we can't do it without a bung to hook up there wide-band for monitoring. What would you do in his shoes at that point except, rip off the heat wrap and drill the hole and weld the bung in on the spot. I didn't want him to spend all that time and then have to "COB" something up that is in plain view.
03-14-2007 11:29 AM
stevehayes01
Quote:
Originally Posted by AeroDynamic View Post
yeah 2nd bung for a EGT but its not needed to run the car... i thought saabboost was telling him he needed it simply for when he swaps the motor which did not make any sence to me.
You dont even need the 2nd bung for EGT... You can use a drill in hose clamp style K type thermocouple for that. Goes in super clean and only puts a 1/4" hole in the DP.
03-14-2007 11:25 AM
AeroDynamic yeah 2nd bung for a EGT but its not needed to run the car... i thought saabboost was telling him he needed it simply for when he swaps the motor which did not make any sence to me.
03-14-2007 11:22 AM
stevehayes01
Quote:
Originally Posted by Drew in Houston View Post
To monitor while tuning.

x2 ----- Wether you have a mailbox tune or a custom tune you should have a 2nd bung on for those Dyno days and tuning and hell in case you ever want to run a wideband o2 sensor setup on a daily basis.
03-14-2007 11:14 AM
CooperS7777 Not all tuners do that, Im not sure who Boz has settled on or if anyone at all yet - but some simply dont. I have 3 o2 sensors in my car, one of which is a wideband but its not running all the time.
03-14-2007 11:10 AM
SAABOOST My very first comment I was asking him he was going with a "custom" tune. I can't see a mail order being 100% right out the box. I thought I read in a different post that he was going to go with a "custom" tune, in which he would need the second pre-cat O2 bung , just like your going to need with your stand alone.
03-14-2007 11:04 AM
Drew in Houston To monitor while tuning.

Quote:
Originally Posted by AeroDynamic View Post
i guess i dont understand why he needs a second one if his car stock is OBDI. Hes swapping in a new motor but the only difference is the internals.... right
03-14-2007 11:02 AM
AeroDynamic
Quote:
Originally Posted by SAABOOST View Post
???? My comment was meant for pre-warning, I would hate to see him have it all installed then the tuner tells him he has to install a second pre-cat O2 bung.
i guess i dont understand why he needs a second one if his car stock is OBDI. Hes swapping in a new motor but the only difference is the internals.... right
03-14-2007 10:57 AM
drewz airflow se yeah in 95 there is only one O2 sensor
03-14-2007 10:54 AM
SAABOOST
Quote:
Originally Posted by AeroDynamic View Post
yeah the motor has nothing to do with how many o2 sensors you need.
???? My comment was meant for pre-warning, I would hate to see him have it all installed then the tuner tells him he has to install a second pre-cat O2 bung.
03-14-2007 10:51 AM
AeroDynamic yeah the motor has nothing to do with how many o2 sensors you need.
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