Best N/A mods for around $500 - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

Reply
 
 
 
Thread Tools Search this Thread
Old 02-25-2007, 02:40 PM   #11
Senior Member
Certified GM nut
 
Join Date: Jul 2004
Location: New York City
Posts: 1,912
Thanks: 0
Thanked 0 Times in 0 Posts
OLDsman105 is on a distinguished road
Default

Quote:
Originally Posted by clm2112
Quote:
Originally Posted by Nashville Cowboy
Chip or tuner, and what would I alter with the tuner (just shift points?) and would any alterations with a tuner hurt the engine at all? I've read that a richer mix has no impact on the cars because the computer will just re-mix it to the proper levels so there'* no way to trick it.
Well, that'* what tuning does, alters the PCM'* idea of what "Normal" is by changing it'* fuel and ignition maps. I'm not talking about some of the snake-oil gizmos being hawked that are supposed to trick the PCM, I mean actually altering the PCM'* software AFTER you have made some modification to take advantage of what was done.

Good, simple mods like T-stats and air filters let the motor run a little better and cooler. Usually they fall into the range of what the PCM thinks is "Normal" for the motor. Occasionally they put the motor outside the range of what the stock map thinks is normal (And GM'* ideal of "good" includes a mixture that is on the lean side for emissions purposes) so a little alteration to the fuel and ignition tables is in order to take advantage of the changes made to the motor.

More intensive mods like headers, cams, cylinder head work, etc, if done right, can really increase the airflow into the motor and do need alterations to the PCM to get the most out of them.

So, while the car is under warranty, now is the time to see what the car is doing in near stock trim, so you'll have a better understanding of what'* going to happen when you make changes. Even a stock PCM'* software can be altered to pick up a little bit on a stock motor. The software was written for an "Average" production motor...not your specific example of the type.
I think this should be added to the tuning sticky up top. Great explination
OLDsman105 is offline   Reply With Quote
Old 02-25-2007, 07:30 PM   #12
Senior Member
Certified GM nut
 
Join Date: Dec 2002
Location: plattsburgh NY
Posts: 2,037
Thanks: 0
Thanked 0 Times in 0 Posts
TJ'sblackbonne is on a distinguished road
Default

nevermind i moved it
TJ'sblackbonne is offline   Reply With Quote
Old 02-26-2007, 03:38 PM   #13
Senior Member
Posts like a Turbo
Thread Starter
 
Join Date: Jan 2007
Location: Buffalo, NY
Posts: 216
Thanks: 0
Thanked 0 Times in 0 Posts
Nashville Cowboy is on a distinguished road
Default

Sounds like a new thermostat and FWI are deffinates along with a performance PCM as a prerequisite to a cam and rockers.

Are some PCM modules better than others, any recomendations/prices? Any idea what kind of difference I'd see with a FWI, thermostat and PCM alone?

Most of what I'm reading says that I'm best to stick with the stock exhaust and the only mod that would really help is a high flow cat to replace the stock one.

Oh, and how do I tell what gearing I have?
Nashville Cowboy is offline   Reply With Quote
Old 02-26-2007, 10:13 PM   #14
Senior Member
True Car Nut
 
95naSTA's Avatar
 
Join Date: Feb 2003
Location: Philly
Posts: 4,508
Thanks: 0
Thanked 0 Times in 0 Posts
95naSTA is on a distinguished road
Default

I would put the money for the generic pcm into something else. It'* better to do tuning after major changes.
95naSTA is offline   Reply With Quote
Old 02-26-2007, 11:09 PM   #15
Senior Member
Posts like a Turbo
Thread Starter
 
Join Date: Jan 2007
Location: Buffalo, NY
Posts: 216
Thanks: 0
Thanked 0 Times in 0 Posts
Nashville Cowboy is on a distinguished road
Default

I think that makes logical sense also, but I'm deffinatly not speaking from any experience there. If I do a new cam or rockers though, those require more mods right?
Nashville Cowboy is offline   Reply With Quote
Old 02-26-2007, 11:43 PM   #16
Senior Member
True Car Nut
 
95naSTA's Avatar
 
Join Date: Feb 2003
Location: Philly
Posts: 4,508
Thanks: 0
Thanked 0 Times in 0 Posts
95naSTA is on a distinguished road
Default

Well a cam is going to be pretty much your budget or more just for installation, so I'm guessing thats out of the question.
I'm not sure how much someone would charge for rockers. Maybe just hand around for a while, read some of the more technical threads to get more familiar with the engine and try the install yourself later.
You don't have to change any hard parts when you do either an ER or 1.8 rocker install. ERs are the more optimum rocker setup. Your tuning will be a little off but not nearly as off as if you went with a cam. It will run fine but adjusting the fuel and spark accordingly will optimize it.
How about try a 180 thermostat, intake, and highflow cat for now. Get more familiar with the engine and do rockers and pems later and eventually a pcm.
95naSTA is offline   Reply With Quote
Old 02-26-2007, 11:47 PM   #17
Senior Member
Posts like a Turbo
Thread Starter
 
Join Date: Jan 2007
Location: Buffalo, NY
Posts: 216
Thanks: 0
Thanked 0 Times in 0 Posts
Nashville Cowboy is on a distinguished road
Default

makes sense, looks like I need a new thermostat anyways. Would going to a 180 degree thermostat affect the climate control for the inside of the car?

Also, would adding a throttle body space do any good? I saw them for the Grand Prixs.
Nashville Cowboy is offline   Reply With Quote
Old 02-26-2007, 11:58 PM   #18
Senior Member
True Car Nut
 
Join Date: Nov 2002
Location: Texarkana, Texas
Posts: 6,041
Thanks: 0
Thanked 0 Times in 0 Posts
Damemorder is on a distinguished road
Default

Quote:
Originally Posted by Nashville Cowboy
makes sense, looks like I need a new thermostat anyways. Would going to a 180 degree thermostat affect the climate control for the inside of the car?

Also, would adding a throttle body space do any good? I saw them for the Grand Prixs.

It may take a little longer for the car to heat up so the heater wouldn't work as well right away. Colder climates see this more often.

The Throttle Body Spacer is a gimmick at best. Its' idea is right, But it'* just about the worst way to do it.
Damemorder is offline   Reply With Quote
Old 02-27-2007, 12:00 AM   #19
Junior Member
Posts like a Ricer Type-R
 
Join Date: Aug 2002
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
willwren is on a distinguished road
Default

TB spacer is a gimmick, and it'* idea isn't right. That works in a TB injected application where the spacer is below the TB injectors. It doesn't work at all in multi-port, other than to provide a location for N2 or WI nozzles. It'* of no benefit whatsoever on any of our FI engines. Lengthening your intake pipe would provide the same effect, if there were any benefit.
willwren is offline   Reply With Quote
Old 02-27-2007, 12:40 AM   #20
Junior Member
Posts like a Ricer Type-R
 
Join Date: Aug 2002
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
willwren is on a distinguished road
Default

Quote:
Originally Posted by Damemorder
Bill, I suggest you take a step back and consider your position. You're bashing me now.

http://www.bonnevilleclub.com/forum/...603&highlight=
You know damned well that a TB spacer is meant to cool the intake temps. You saying that'* not a good idea?

Don't expect me to be proud of your work. Go ahead and be proud of yourself to your hearts' content.
Straitor, can you explain to me how a TB spacer can reduce intake temps? And how I bashed you? I AGREED with you. You stated it was a gimmick too, didn't you? Please explain how a 1" thick chunk of aluminum can reduce intake temps.
willwren is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Best car in the $300-$500 price range Hans Lounge 9 07-19-2007 09:41 PM
Best flatpanel for around $250????? Hans Lounge 11 01-10-2007 06:01 PM
What's are your mods or future mods on your Bonne? Str8pimpin Performance, Brainstorming & Tuning 20 09-15-2004 12:16 PM
Best way to keep sub box from sliding around Mayhem_3 Audio (and aftermarket electronics) 20 07-05-2003 10:23 AM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 03:36 AM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.