I emailed a company called pcmforless and inquired on there product. Here is my email sent and the reply I got.

From: Scott
To: Chips@pcmforless.com
Sent: Wednesday, March 08, 2006 11:38 AM
Subject: 4.3 liter programming


Hello I’m inquiring about the reprogramming you folks do. I have a 2001 S10 Blazer 4wd with a 4.3 litre w/ an auto transmission, stock cam, stock exhaust manifolds, stock exhaust ect…



What horse power gains could I expect? How will this affect my timing? Will 91 or better octane rating be needed? Can reprogramming be done with out affecting the transmission shift points? (I have a B&M shift improver and Vette servo installed.)



Thanks for your reply,



Scott

__________________________________________________ __________________________________________________ __________

I can pick you up a little over 10 HP on 87 octane or over 20 on 91 or higher. I can also firm up the shifts, delete the torque management, delete the top speed limiter, improve the shift points, plus I can pick up .5 to 1 MPG in mileage. I can do it without firming the shifts, I am though able to firm up the shifts at WOT, which the B&M unit does not seem to do very well.
Thanks,
Bryan


Bryan Herter
Lead Programmer of 94 and newer cars and trucks for
WWW.PCMFORLESS.COM
570-398-4431 M-F 9AM to 7PM Eastern

Order Sheets and pricing can be found on our website
__________________________________________________ __________________________________________________ __________

After reading that. I was going to send my PCM out. But now my money for the toy, must go to my Impala.
I had to purchase lower intake gaskets, upper intake manifold, EGR elbow, water pump.... and all the crap that goes with it.

Anyone who gets this flash done, please post it. I'm anxious to know how it feels in the Blazer.

 

hey my 1st post but i thought id let u no that i just ordered from pcm it will be here in a couple of days ill let u no how i like it

 

Sounds good. What was the hack work done to it? Tranny line pressure increase? ignition advance?

 

u mean this ?
Vehicle Info:
> Year 99
> Model S-10/Blazer
> VIN: 1GNDT13W2X2230336
> Broadcast
> Throttle Body Stock
> __________________________________________________ ______________
> Drivetrain Info:
> Trans A4
> Gear Stock
> Tire P235/75 R15
> Torque Convertor Stock
> Shift Firmness Firm Shift points
> Throttle Body Stock
> __________________________________________________ ______________
> Fuel System:
> Injector size .
> Injector Make Stock
> Fuel Grade Premium
> __________________________________________________ _____________
> General: Constants
> Speed limitor Remove
> Rev Limitor Tuners choice (Reccomended)
> Thermostat 160
> CAGS Leave as is
> __________________________________________________ ______________
> MAF:
> MAF Vehicle not originally equipped
> Ported MAF? Stock
> Descreeened MAF? No/Stock
> __________________________________________________ ______________
> DTC's: Switches
> VATS Leave as is
> Cats Gone
> CAGS Leave as is
> EGR Leave as is
> AIR Leave as is
> DTC Other
>
>
> __________________________________________________ _____________
> Exhaust:
> Exhaust Stock
> Exhaust Muffler only
> Cats Gone
> __________________________________________________ ______________
> Engine
> Intake Manifold Stock
> Camshaft
> Duration ,
> Lift ,
> LSA
> __________________________________________________ ______________
> Head Info
>
>
>
> Compression :1
> Displacement 262 CID
> __________________________________________________ ______________
> MISC
> High Alt?? No
> Nitrous No Nothing
> Towing No
> Wieght
> __________________________________________________ ______________
> Other infomation
> K&N AIR FILTER

 

oh ya this is the oder sheet u have 2 fill out

 

That was the order sheet? wow.


No rev limiter? Be careful that no one decides to try out your truck and blows the motor.

What are the new shift points?

 

dunno the shift pionts i guess whatevers best 4 89 octane and ill be the only one drivin it 4 awhile

 

hey its finally in and so far so good. i drove it for an hr straight and the more i drive it the more power it seems to have. it pro added an easy 20 hp. ill post bac tomorrow after my mail route to let u now how it stands up to 4 to 5 hours of stopping and going.

 

oh ya if u do order this tell them jschmoutey@yahoo.com sent u and put my name in other info on the ordersheet

 

Sounds good.

BTW, I have a mail box at the road. Are you drivers/carriers obligated to make an effort to step out and deliver a certified letter? My carrier left a P.O. note saying she missed me. I was home all day. You can hear her Blazer coming 1/8 mile away from the loud exhaust.

Oh, and it wasn't good news.