LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

PCM for less tune

Old 02-04-2019, 07:48 PM
  #1  
LT5
Registered User
Thread Starter
 
Join Date: Mar 2016
Location: California
Posts: 113
PCM for less tune

Just wanted to share with everyone, no dyno run but wow what a difference from the hypertech tune and the pcm for less. Car starts a bit faster, idles fine, and has a nice response compared to before. Overall the car runs alot better, i believe it has alot more torque to as throttle response is crisp, and its braking the tires loose in second now. Hope this helps for anyone wanting one, well worth the 200!
LT5 is offline  
Old 02-04-2019, 08:06 PM
  #2  
Registered User
 
Join Date: Aug 2005
Location: Las Vegas
Posts: 346
Re: PCM for less tune

Thx for sharing. Just curious if you had a noticeable "adaptive learning" period until the PCM sorted the new tune out. I dropped a PCM4Less tuned PCM in and it was almost scary for the first 10 minutes. Chugged and backfired like it was gonna stall. In fact I think I recall having to restart at least once before leaving the driveway.

How 'bout yours?
cardo0 is offline  
Old 02-04-2019, 09:21 PM
  #3  
LT5
Registered User
Thread Starter
 
Join Date: Mar 2016
Location: California
Posts: 113
Re: PCM for less tune

Naw not at all, soon as it went in car ran better, then by the time i drive about 8 miles to work and on the way back it was even more noticeable how well this thing is tuned. Honestly it feels like i have the entire power band at my control now like an ls1 thats tuned well, cant wait to see what or how it feels with a real ignition box!!
LT5 is offline  
Old 02-05-2019, 08:41 AM
  #4  
Registered User
 
Join Date: Jun 2003
Posts: 831
Re: PCM for less tune

Originally Posted by LT5 View Post
, cant wait to see what or how it feels with a real ignition box!!
ignition box won't give you much on a stock or mild build. Won't hurt anything though.

Swapping over to a 96 coil would be more of an improvement
Chimera96 is offline  
Old 02-05-2019, 10:26 AM
  #5  
Super Moderator
 
Injuneer's Avatar
 
Join Date: Nov 1998
Location: Hell was full so they sent me to NJ
Posts: 67,070
Re: PCM for less tune

Interesting report. Over at ltxtech.com, their has been a lot of criticism of pcmforless since Bryan "retired" and Keith took over the mail order tuning. Has Brian returned?
Injuneer is offline  
Old 02-05-2019, 11:56 AM
  #6  
Registered User
 
Join Date: Jun 2003
Posts: 831
Re: PCM for less tune

Originally Posted by Injuneer View Post
Interesting report. Over at ltxtech.com, their has been a lot of criticism of pcmforless since Bryan "retired" and Keith took over the mail order tuning. Has Brian returned?
^^^^^, if there is one common thread about pcm4less...they have a large amount of complaints about their tunes

Op seems to be one of few who seems happy....although SOP is not a good indicator of any "performance" gain. B&A dyno results, or time slips, are regarded as real indicators
Chimera96 is offline  
Old 02-05-2019, 07:56 PM
  #7  
LT5
Registered User
Thread Starter
 
Join Date: Mar 2016
Location: California
Posts: 113
Re: PCM for less tune

Honestly i dealt with Keith and he knows how to tune, thing runs strong all the way to 6k, especially the throttle response is what i really noticed. On the bad side i noticed he set the rev limiter to 6200, i know these don't make power past that but i hate hitting the limiter, a nice shift at 6300 would make going into 3rd alot better. Also i had a hypertech tune on it before, and i told him that, first he said he would give me the 100 back, then he said on those he cannot. So ill see if he gives the 100 back to me or not for the core, because i had no idea that the hypertech one locks the system and i sold it long ago. But as far as a torque and throttle response, this thing runs better and seems to pull a bit harder up top and all over, the biggest difference is the throttle response....it responds like its running right as to before it was not.
LT5 is offline  
Old 02-05-2019, 11:19 PM
  #8  
Super Moderator
 
Injuneer's Avatar
 
Join Date: Nov 1998
Location: Hell was full so they sent me to NJ
Posts: 67,070
Re: PCM for less tune

Probably would see an improvement over the Hypertech. A dyno test done by one of the high performance mags (and this is probably 20 years ago) showed a loss of power with the Hypertech “performance” tune on a relatively stock 96. Only way they gained power was if the 160 t'stat and revised fan on/off temps were done. A tuner can can pick up 10-15 HP simply be leaning out the overly rich target A/F ratio the stock programming uses for “power enrichment” (~WOT) mode.
I fell for all this BS when I bought my 94 brand new. The only things that showed improved track times were a CAI and 3” Borla catback. No changes at all with things like throttle body air foil, underdrive pulleys, adjustable fuel pressure regulator, 8mm Taylor Spiro-Pro wires, and later Taylor 409 (10.4mm) wires, Electromotive 4-coil (SDI/Opti Eliminator) Ignition system, Hypertech programmer (even with the 160 t’stat. Some of those do provide small dyno gains, but not enough to show up in “throttle response”, or improved track times. Even a set of JBL shortie headers did little.

Last edited by Injuneer; 02-06-2019 at 12:09 PM.
Injuneer is offline  
Old 02-06-2019, 08:24 AM
  #9  
LT5
Registered User
Thread Starter
 
Join Date: Mar 2016
Location: California
Posts: 113
Re: PCM for less tune

Ive had similar experiences as this is my second camaro, although when i did the alternator and crank pully underdrive from the bbk stuff i did see a nice improvment in how the motor revved it was faster. Ill be adding a box to the coil i got and i hope i see something. Honestly when it comes to RWHP numbers no u don't seem to get ur dollar worth. Simply doing a nice cam or head work is way more cost effective. Personally i just wanna squeez everything i can outta this stock Lt1 and see what i can get.
LT5 is offline  
Old 02-06-2019, 12:19 PM
  #10  
Super Moderator
 
Injuneer's Avatar
 
Join Date: Nov 1998
Location: Hell was full so they sent me to NJ
Posts: 67,070
Re: PCM for less tune

Again, dyno tests show the peak gain from an under drive pulley to be 0.7 HP..... less than 1 HP. You can't feel that small change. An under drive pulley gains HP because it reduces the rotating speed of the accessories, and hence the energy required to accelerate the mass. It is mostly due to slowing down the water pump. An LT1 doesn't have a belt driven water pump. And the pulley can cause poor battery charging at idle.

Drivetrain Modifications #2


Air foil.... 2.2 HP. And some of the air foils block the IAC port and the idle bypass hole, causing problems.

Drivetrain Modifications #4
Injuneer is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
IrocManiac
LT1 Based Engine Tech
1
02-16-2005 06:40 PM
CoUnTryMuZiCZ28
LT1 Based Engine Tech
20
02-23-2004 12:06 PM
speed_demon24
LT1 Based Engine Tech
3
10-08-2003 06:21 PM
97bowtie
LT1 Based Engine Tech
11
09-18-2003 08:55 PM
QuasarBlue94Z28
Computer Diagnostics and Tuning
1
06-20-2003 01:27 PM


Thread Tools
Search this Thread
Quick Reply: PCM for less tune


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

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.