Thread: shelf tunes- ZZP, WBody, Overkill

so i need a custom tune, at this point there are 3 options for shelf tune ZZP, Wbody and Overkill.

I got the 1.0 overkill years ago and i love it but Will takes time with shipping and returns etc.
ZZP requires you buy the 1.0 and then custom ontop so its an extra cash.
Wbody will do a custom the first time but are about the same price as the zzp+50.

What is everyones experience with ZZP and Wbody tunes, is it worth the extra bucks for the ZZP tune?
the reason for the shelf tune is that i do daily my gp and likely will for at least another year. I would love an in-car tune but one of the local tuning shops quoted me $600 for tuning.


current mods list:

AL104s gapped at .55
ZZP front power log
ZZP rear power log
wrapped crossover
ZZP 3" DP w/ Highflow cat
ZZP 3" aluminized exhaust w/ Magnaflow resonator and ZZP mufflers
ZZP 1.9 ratio modded rockers
open air intake
ZZP ported and polished LIM
180* t-stat
green coolant swap
Egr delete


parts waiting on tune to install:

3.6" MPS
Siemens dekka #60 injectors
LQ4 MAF

Overkill FTW!

Not at all impressed with my zzp 1.0

I have a ZZP custom for VS cam, IC, 42#, N*, shift point, etc.
The tune is good, I get good throttle response, 17 to 19 degrees timing at WOT (if I dare go WOT -- drivetrain has 160K miles on a stock trans). Overall as a daily it runs great. But it's pig rich at times, and mileage is poor (16 to 18 mixed driving, 23-24 on highway cruising 75mph)

I've tweaked a copy of my tune a little bit but I ended up going back to the base tune because I couldn't get the MAFF right.

It seems like zzp is notorious for tuning pig rich....i had 1.0 from them with an all stock car ,then i went to a dhp tune and the car is way more responsive and ready to go...... while looking at the tune from zzp everything was set sky high....almost piston chipping engine blowing high!

buy a dhp tuner, then you can tweak the current tune.

and why the maf and injectors? your not hardly modded. 3.6 pulley wont out flow the stock maf or the injectors,

if you for got to add your going on e85 you maybe could use 60's but 42's seem to work for most.


im on gas 93, and run a ic with a 3.2 i was almost maxed out on stock injectors, why im on 42's now.

As Scotty said, not really any reason for you to get a tune.

But... All canned tunes are nearly identical, including Overkill's. I'd get the cheapest.

All these folks that complain their zzp tune runs rich don't seem to realize that the actual afr is controlled by the o2 sensor.

Originally Posted by GTPpower

As Scotty said, not really any reason for you to get a tune.

But... All canned tunes are nearly identical, including Overkill's. I'd get the cheapest.

All these folks that complain their zzp tune runs rich don't seem to realize that the actual afr is controlled by the o2 sensor.

This may be 100% true,and i won't argue this one bit cause when it comes to tuning I'm no wizard...but...all i know for sure is that once i changed my tune from the zzp tune to the dhp my car has not ran rich since....but that's just my car.

60#s were a deal literally too good to pass up, i was actually considering going e85 but then realized id kinda lose my ability to go on long road trips and stop anywhere for gas also heard mixed answers on needing to replace the stock fuel pump when going to e85. the cars got 153k stock trans and ive been driving it since i got it with 85k

could have got 3.5 instead of 3.6 but by the time i asked for the 3.5 it was already gone. I don't actually have any tuning experience myself so i'm leaning toward not risking my only car.

Originally Posted by speed demon

This may be 100% true,and i won't argue this one bit cause when it comes to tuning I'm no wizard...but...all i know for sure is that once i changed my tune from the zzp tune to the dhp my car has not ran rich since....but that's just my car.

How do you know you were running rich?

Originally Posted by DCGTP

60#s were a deal literally too good to pass up, i was actually considering going e85 but then realized id kinda lose my ability to go on long road trips and stop anywhere for gas also heard mixed answers on needing to replace the stock fuel pump when going to e85. the cars got 153k stock trans and ive been driving it since i got it with 85k

could have got 3.5 instead of 3.6 but by the time i asked for the 3.5 it was already gone. I don't actually have any tuning experience myself so i'm leaning toward not risking my only car.

If it were me, I'd sell the 60's. Stock injectors can be used down tona 3.0 pulley or smaller, depending on a few details. If you have no plans to go smaller than a 3.2 or switch to e85, the stock injectors will do everything better.

sit on the injectors till you figure out if your gonna run corn or not. the maf is un needed as well at this point.

buying a tuner ends canned tunes, you can play with it at will or as needed. you already got a canned tune, so all you really need to touch is the maf and timing.

new avt box from dhp is 250, you can later sell it for about the same money if you want. think of it like a deposit on one. and theres enough guys here that will help you out. like me, ive tuned a few guys over email who were unsure what to touch or were to scared to play with it cause they are so new to tuning.

I'm currently running 42's with corn and a pump re-wire on a car with 300k~ miles. Stock pump (maximum laughs, idk for how long though. Tab 85 is bent too. Fixed my deadspot issue it had around 40-50~ mph)...I'm sure the pump is about shot.

3.25" pulley, GenV, 3" DP/catback with some solid mounts and a shift kit. Reptile tuned it via HPT.

Runs like a raped ape for a totally stock car, otherwise.

I wouldn't do a canned tune, ever anyways. Get someone local who will tune it in the car with a laptop via DHP or HPT with a wideband.

Originally Posted by GTPpower

How do you know you were running rich?

Had it scanned,black smoke,fuel smell....like stated that was just my car,and that could have been from a few things but as of now none of that is occurring...still not impressed with the tune i had from them...but...that doesn't mean i have a problem with zzp because i have had no issues with them or their parts.....just not fond of their tunes and that happens,some people like wbody some like overkill some rather do it themselves..but..either way the op should do what is right for his car at this point.

Originally Posted by speed demon

Had it scanned,black smoke,fuel smell....like stated that was just my car,and that could have been from a few things but as of now none of that is occurring...still not impressed with the tune i had from them...but...that doesn't mean i have a problem with zzp because i have had no issues with them or their parts.....just not fond of their tunes and that happens,some people like wbody some like overkill some rather do it themselves..but..either way the op should do what is right for his car at this point.

What did the scan show?

I believe it read 172 or 175,but i cant recall it was a good while since i had it scanned.

So it was a DTC code that was thrown?

What's right for my car is what I'm trying to pin down. I've been doing my maintenance for 5 years now and have never conclusively figured out what my setup is capable of supporting while still being reliable as a daily. That being said I've recently replaced a wheel bearing, my steering rack and my actual gas pedal.

Tl;Dr how low can my pulley go on my current setup?

Originally Posted by GTPpower

So it was a DTC code that was thrown?

Yes, but at one point i did have a bad 02 and that was only for 2 days and also before it got scanned.how do i know the 02 was bad....because at startup or a stop the rpms would roller-coaster up and down like i was reving on the gas,after new 02 problem solved.

Originally Posted by speed demon

Yes, but at one point i did have a bad 02 and that was only for 2 days and also before it got scanned.how do i know the 02 was bad....because at startup or a stop the rpms would roller-coaster up and down like i was reving on the gas,after new 02 problem solved.

The O2 doesn't control fueling at startup.