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03-23-2014
I'm looking for my next step. I want a little more ump hand reliability without just doing unnecessary mods. So should I go for speed daddy headers or u-bend delete or cat less down pipe? This is for a gtp. Will have open cone intake and probably PCM in the future. Also don't want it to sound like a bag of rice/crotch rocket.
03-23-2014
Get the headers
03-23-2014
Changing any of those components will not make any performance difference that you would be able to notice. Pulley drop is where most of the performance comes from, all replacing those components does is help the engine breath more to allow you to run a smaller pulley.
Originally Posted by The Sunfire Guy
03-23-2014
Aka headers supporting mods for more power/smaller supercharger pulley in the future
Originally Posted by theaceofspades
03-23-2014
If the motors allowed to breath right how detrimental is a pulley drop to average motor life.... Also would a mod fuel rail or aftermarket injectors be needed for pulley drop?
03-23-2014
read this thread, hell print it out keep it by the shi tter for reading material lol it will explain 99% of your questions.
http://www.grandprixforums.net/threa...ding-Your-3800!
03-23-2014
I just read that but it still didn't really discuss if when doing a pulley drop if an ic or mod fuel rail is necessary
03-23-2014
An IC is needed for like a 3.0 pulley
Originally Posted by theaceofspades
03-23-2014
If you do a straight pipe you can run a 3.0 pulley with like 0* kr on stock manifolds, as long as you have no cats
03-23-2014
Damn it why didn't I think of that^
03-23-2014
How low can I go with just headers and PCM?
03-23-2014
You need to reread the thread that Scotty posted throughly.
You just don't drop pullies without first having something to scan with to determine if your getting any knock.. Knock is bad... Knock equals yours piston going boom
03-23-2014
you could drop to a 3.4 pulley with headers. no tune is needed, but it cant hurt either.
if you ic you need modded fuel rails, or fuel logs.
03-23-2014
With a 3.4 would an ic even be beneficial?
03-23-2014
a ic is almost always beneficial. it will also let you run a smaller pulley, then your talking tune for sure.
so if your gonna put a ic on you'll end up with a smaller pulley sooner or later.
but before any of this happens get a aeroforce gauge so you can scan your engine properly for KR. then start the pulley dropping.
03-23-2014
Not scanning your motor is like banging a hooker unprotected and hoping your not infected. Credit for the quote goes to however said it first
Originally Posted by theaceofspades
03-23-2014
Originally Posted by The Sunfire Guy
03-23-2014
Read some threads before posting new threads that have been covered many times before.
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