Mac LT header install help
08-04-2011, 08:36 PM
#11
3rd Gear Member
Thread Starter
Join Date: May 2007
Location: Ar
Posts: 555
So, short answer is LTs+home-made P&P lower+ Vap auto windstar kit upper.
08-05-2011, 06:34 PM
#13
3rd Gear Member
Join Date: Feb 2010
Location: New Hampshire
Posts: 585
I did the install myself without removing coilpack or starter. The passenger side was easy enough through the top, but the drivers side needs to be brought in from the bottom. Biggest problem for me was the EGR tubes were all rusted and seized, other than that it's extremely self explanatory. I had some clearance issues on the driver side and the flange was rubbing the transmission pan, it was minimal though. I just shaved the flange about 1/4" and it clears just fine now. invest in a decent catback though, I'm having some backpressure issues with the GT OEM catback, the mufflers are extremely restrictive. I had a tuner already so I can't vouch for whether or not it makes a huge difference, but I still haven't gotten a new tune since the install and everything's running just fine. depending on the mid-pipe you choose (I have BBK) all four O2 sensors will need extending.
08-05-2011, 07:25 PM
#14
3rd Gear Member
Thread Starter
Join Date: May 2007
Location: Ar
Posts: 555
I did the install myself without removing coilpack or starter. The passenger side was easy enough through the top, but the drivers side needs to be brought in from the bottom. Biggest problem for me was the EGR tubes were all rusted and seized, other than that it's extremely self explanatory. I had some clearance issues on the driver side and the flange was rubbing the transmission pan, it was minimal though. I just shaved the flange about 1/4" and it clears just fine now. invest in a decent catback though, I'm having some backpressure issues with the GT OEM catback, the mufflers are extremely restrictive. I had a tuner already so I can't vouch for whether or not it makes a huge difference, but I still haven't gotten a new tune since the install and everything's running just fine. depending on the mid-pipe you choose (I have BBK) all four O2 sensors will need extending.
08-05-2011, 07:30 PM
#15
3rd Gear Member
Join Date: Feb 2010
Location: New Hampshire
Posts: 585
You're going to hate the sound with the GT mufflers, I know I do. Go to your local parts store and try to pick up a set of 2.5" inlet/outlet offset/offset Thrush turbo series mufflers or cherry bomb turbo's. You'll be much happier with the sound AND won't run into the restriction problems I've been dealing with.
08-06-2011, 11:34 PM
#19
3rd Gear Member
Join Date: Feb 2010
Location: New Hampshire
Posts: 585
I have OEM's now, looking for a full catback if I can find one at the right price. Hopefully magna, borla, bassani, or even a loudmouth. I'm not even going to dwell in the land of flows or thrush's or cherry bombs.