ZZP Did What?
^^^they wouldn't be selling this stuff if there wasn't a demand for it. Aside from that, it's not always about buying things, but about reliability and durability as well. ZZP likes to test the **** out of everything they put their name on.
Well that was my question, HOW much of a demand for this stuff is their is what I was wondering. Regardless though, that much power from a fwd 4 cylinder is something to be proud off. Makes me happy to say I went with ZZP over OTTP for my option B.
How much would a setup like this cost to get someone else to these ridiculous numbers?
8k?? 10K??????
Put a package together for the website, you might have a couple biters
8k?? 10K??????
Put a package together for the website, you might have a couple biters
there was a lot of band aides they had to do to get up there as well. And it's basically a modded package of what they already sell.
just go to their website, and do a price check on the list of things they mentioned on page 1. Should come to around 11k or so. That's just using the imaginary figures in my mind though.
Senior Member
Joined: 09-05-10
Posts: 1,668
Likes: 0
From: St. Louis, MO
Thread Starter
Former Vendor
Joined: 06-03-08
Posts: 4,169
Likes: 8
From: Grand Rapids, MI
On Friday morning, we discussed where the car was at and where we thought it could end up. Our thoughts were that we needed more boost, more fuel pump flow, and a better flowing downpipe. Of course all along, we were considering the chance of a catastrophic engine failure that might spew parts and oil all over the dyno and bay. My estimation was that we would get to the 725-750whp range at which point something major would break. This is why we set the fuel system up to support about 750whp. The voltage booster was a nice temp fix, but we still could not get the pressure to flow enough fuel with 45+psi boost pressures. To solve the fuel delivery issue once and for all, I had my wife drop off the pump that is supposed to be going in my Corvette this summer. It is a 1500+ HP Magnafuel pump which is the same as the one I run on my 8 second drag car. With the 2 LSJ pumps in parallel feeding the Magnafuel pump, all of the pumps would be pushing less pressure(relative), yet we could achieve 90-100 psi at the fuel rail with more than enough flow to max the 190lb injectors.
While I worked on putting together a system to integrate this pump into the existing fuel system, Ryan built a 3.5" downpipe. When he finished installing the downpipe, he helped wire up the fuel pump. Here is a pic of the 3rd fuel pump with its temporary mounting location:
Somehow we managed to find every fitting and hose that we needed to install this pump in place of the filter. I didn't have to purchase any new parts or even wander more than 10 feet from my toolbox! It sure feels good when things work out that well. We installed the pump and turned the key and were pleasantly surprised to see that the base pressure was stable at 41psi with all 3 pumps running.
Next, we replaced the TiAL 44mm wastegate with a Precision 46mm gate that allowed us to switch to a 26psi spring setup. Combined with our boost controller, this would give us boost control up to ~55psi.
We put the car back on the dyno, turned it down a bit and made a pull. The first pull was 834whp at 44psi with an over-rich afr! This meant that the downpipe and fuel pump solution were both working well. Leaned out, we managed 859whp at 45psi. We turned it up a bit, tuned some more, and put down 870whp at 46 psi. We then hit 880whp at 47psi. Here is an in-car vid at that power level(windows closed):
YouTube - Ryan's ZZP LSJ Cobalt In Car Dyno
Over the next few pulls, the peak horsepower gains were diminishing pretty quick. However, torque was still climbing. The result was a flatter, wider power band which is nice, but we were still looking for peak power numbers at this point. Ryan replaced the plugs again and dropped the gap to .020"
By the time we reached 51psi, we hit 890whp. The next pull was 891whp. This pull was 54psi on the hit!
YouTube - Ryan's ZZP LSJ Cobalt Dynos 891 WHP
The next pull was 894 (891 with smoothing)
The next pull hit 898whp, but we got a code for accelerator pedal position sensor and it closed the throttle mid pull. We didn't figure out why it threw the code. However, looking into this, we discovered a possible leak at the throttle body silicone coupler, so we replaced it. The next pull was nearly 55psi and it held boost longer, which means we probably did have a leak. Unfortunately, power fell off on this pull with the peak only hitting 892. Only, lol. We let it cool down a bit and turned the boost back down a couple lbs, but the next pull(pull #60) only hit 866whp. Our initial diagnosis says that there is a an issue with the head gasket. The car still starts and drives around completely normal, but I'm guessing if we did another pull, the power would fall off a little more yet- Which brings us to the conclusion of our test. Yes, we failed to find the limit of either the ZZP rods or the new ZZP block girdle. I promise we will try harder next time.
While I worked on putting together a system to integrate this pump into the existing fuel system, Ryan built a 3.5" downpipe. When he finished installing the downpipe, he helped wire up the fuel pump. Here is a pic of the 3rd fuel pump with its temporary mounting location:
Somehow we managed to find every fitting and hose that we needed to install this pump in place of the filter. I didn't have to purchase any new parts or even wander more than 10 feet from my toolbox! It sure feels good when things work out that well. We installed the pump and turned the key and were pleasantly surprised to see that the base pressure was stable at 41psi with all 3 pumps running.
Next, we replaced the TiAL 44mm wastegate with a Precision 46mm gate that allowed us to switch to a 26psi spring setup. Combined with our boost controller, this would give us boost control up to ~55psi.
We put the car back on the dyno, turned it down a bit and made a pull. The first pull was 834whp at 44psi with an over-rich afr! This meant that the downpipe and fuel pump solution were both working well. Leaned out, we managed 859whp at 45psi. We turned it up a bit, tuned some more, and put down 870whp at 46 psi. We then hit 880whp at 47psi. Here is an in-car vid at that power level(windows closed):
YouTube - Ryan's ZZP LSJ Cobalt In Car Dyno
Over the next few pulls, the peak horsepower gains were diminishing pretty quick. However, torque was still climbing. The result was a flatter, wider power band which is nice, but we were still looking for peak power numbers at this point. Ryan replaced the plugs again and dropped the gap to .020"
By the time we reached 51psi, we hit 890whp. The next pull was 891whp. This pull was 54psi on the hit!
YouTube - Ryan's ZZP LSJ Cobalt Dynos 891 WHP
The next pull was 894 (891 with smoothing)
The next pull hit 898whp, but we got a code for accelerator pedal position sensor and it closed the throttle mid pull. We didn't figure out why it threw the code. However, looking into this, we discovered a possible leak at the throttle body silicone coupler, so we replaced it. The next pull was nearly 55psi and it held boost longer, which means we probably did have a leak. Unfortunately, power fell off on this pull with the peak only hitting 892. Only, lol. We let it cool down a bit and turned the boost back down a couple lbs, but the next pull(pull #60) only hit 866whp. Our initial diagnosis says that there is a an issue with the head gasket. The car still starts and drives around completely normal, but I'm guessing if we did another pull, the power would fall off a little more yet- Which brings us to the conclusion of our test. Yes, we failed to find the limit of either the ZZP rods or the new ZZP block girdle. I promise we will try harder next time.
Last edited by Matt M; Apr 3, 2011 at 03:32 PM.
