If you can afford it, some kind of custom tune PCM is the only way to go if your going to mod. Cookie Cutter PCM's are good if you have the exact mods required, but throw one thing extra in the mix, and it can go south quick on you. I dont want to say that this guys PCM's are bad, or that guys is better, but I will tell you that NO MATTER WHICH ONE YOU USE, YOU MUST SCAN. KR is your enemy as well as getting to lean.

You should always scan in various weather conditions, hot, cold, wet, dry, etc. Once you know where your car runs for various weather conditions you really dont need to scan all the time, but dont scan once when you install and its 40 deg outside and think its all good.....summertime comes and hits 100 deg, and your tune changes drastically.

webracin

__________________

2001 Grand Prix GTP
ZZP HUB 3.2 3.4, ZZP 8 Rib conversion, JC 3" DP Gen 2 cat & U-bend Delete, Accel Super Stock 8mm wires, DHP 1.5, 180* Thermo, Throttle Spacer, SS Intercooler, ZZP Fuel Rails, SLP CAI w/K&N Cone, Dynomax cat back, ZZP Tranny.

2000 Grand Prix GTP Daytona K&N, Flowmasters

yeah, as soon as I get the money, Im gonna get a tuner and a laptop to mod my ZZP tune, on that note, Is there any tuner that can be used without a laptop?

__________________
2002 GT...Wizardair, ZZP 2.5 o/r dp, Special Eddition two-tone leather interior added, HUD added, 12" Brake Upgrade, ZZP strut tower bars, gmpp sway bars,-6an braided SS fuel hoses , Hptuned, Top Swaped.....
I've got Boost!! I've got only 1.5* KR left my poor L36 block.....

requires a laptop.......HPtuners

also does ZZP lock there PCM's like DHP?

__________________
2001 GTP street car- GT45 turbo,Stage 4 Intense turbo cam,FMIC,150 wet, double roller timing chain, Diamond forged coated pistons 8:0:1, Diamond piston rings, cryoed L32 connecting rods, Cryoed crank, Clevite77 main bearings, Clevite77 cam bearings, Clevite77 L32 rod bearings, ARP Everything, Intense/meizere true billet Flexplate, Custom UIM, Intense oil pressure kit, Cometic 4 layer head gaskets, OE-R lifters, Cryoed L67 block, ATI turbo dampner, MUCH MORE, 6 more to choose from ASE Certified

No, they dont unless they have changed something. As far as I know, they are completely open. One of the first things I did after getting my tuner was download the bin file so I would have a back up. The next thing I did was buy a spare PCM.

__________________
Scotty Hall
Bartlesville, OK
2001 Pontiac Grand Prix GTP
It whines a lot, but I like it.

The only limitation you will ever face in life is yourself!

From what I have seen, the MPG doesn't look bad on the DIC because they play with the Injector Flow Rates. So while your MPG may look the same on your dash, figure it by hand and you will notice the decrease in MPG.

So to the OP, figure a few tanks of gas by hand (the correct way) and compare these to your MPG before the PCM. I am interested.

__________________
1997 GTP - 200k+ miles, PEMs, 3" SS Exhaust w/ Borla Mufflers, 3.4", 180* stat(summer), FWI, 1.84 RR, PT, SLP hood, KYB GR2s, GMPP Handling Kit, etc...

I don't have a scanner yet! is this bad, the only thing i got on it right now is just a cai. I installed it outside in like 20 degree weather in 5 minutes. Nothing seems wrong.

__________________
SLP headers, Wizaird cai, zzp1.0pcm ,slp powerflo catback,
3.4mps, al 104's, 180*, zzp stage 1 hv tb, flipped motor mounts, spring blockers And much more to come!

well i went on a road trip the day i put the pcm on. I drove 150 miles on a half tank of gas and i was driving pretty fast too like 75 most of way down.

__________________
SLP headers, Wizaird cai, zzp1.0pcm ,slp powerflo catback,
3.4mps, al 104's, 180*, zzp stage 1 hv tb, flipped motor mounts, spring blockers And much more to come!

I have a ZZP PCM and an open cone intake with no other mods. I've thoroughly enjoyed mine for the past year. I'm still pulling in 34 mpg on the highway.

__________________
1998 GTP

Thats dang good mileage. I hope once I get my tranny fixed I'll be back up in that range like before but I think Ive taken a hit due to the tranny not being in the best of shape and needing rebuilt.

__________________
Scotty Hall
Bartlesville, OK
2001 Pontiac Grand Prix GTP
It whines a lot, but I like it.

The only limitation you will ever face in life is yourself!

No wonder you have hardly any mods. I'm lucky to get 28 on the hwy. I have gotten 34 before but he wind was at my back blowing 40mph.

Is the 34mph what you DIC says or what you figure by hand?

No matter what the DIC is allways off. Its an average or estimate. My DIC always says i burn 1 gallon or more less than i fill up with at the pump.

__________________
1999 Grand Prix GTP Black
http://www.cardomain.com/ride/2172058