That's why I'm on the look out for an appropriate sized S so I can spell out CURSE on my Cruze.
Just spent 6hrs in a u pull lot scoring a lightly used manual transmission... Throwing that aside with a slew of other parts I've probably spent close to 3000 and have yet to install any...
Might be able to get the S off of a Traverse, the other vehicles that have S in their name (Suburban, Express van) I think use different size letters than the Cruze.
Might be able to get the S off of a Traverse, the other vehicles that have S in their name (Suburban, Express van) I think use different size letters than the Cruze.
UPDATE: The Cruze will be down for about two week. Today, I shipped out the chassis control module (FSCM) to have my tuner recalibrate it to that take full advantage of the high flow E85 fuel pump.
UPDATE: This is actually the first fuel system on one of my vehicles that I've fully upgraded. So I'm learning as I go along...
I'm pretty much going to have to re-design the fuel supply system. It turns out I have several issues. E85 requires twice as much fuel to combust vs. gasoline. As a result my AEM fuel pump won't flow enough E85 at the pressure needed for my power goals.
There are several reasons for this which I will correct in the spring. On top of the FSCM currently being re-calibrated:
1. The AEM pump just isn't rated for the fuel flow and pressure I need. (I'm going to upgrade pump for the second time.)
2. The factory fuel filter and internal passages, in the pump assembly, is too restrictive. (I'm going to buy or build a custom hanger for the new pump and add external filter. )
3. The factory fuel pulse dampener is too restrictive. (I'm going to upgrade to aftermarket.)
All of this requires that I get off the fence and install my -8AN fuel line.
UPDATE: Today I upgraded the fuel pulse dampener. To do this, I cut the braided line at the hard line. Then I cut off the press fit clamp, and doug out the rubber.
UPDATE: My car is still down for the moment but I bought some fuel system parts to prepare for the fuel pump upgrade in the spring. I decided to go with the Deatschwerks DW400. That should give me 367 LPH at my target pressure of 70 PSI according to 3rd party flow testing.
I'll need to redesign the fuel pump hanger as the pump has a larger diameter than the stock pump. But that will be a good winter project.
Deatschwerks DW400
Duel Pass Flex Fuel Mount and New Sensor as not to reduce flow.
Deatschwerks Fuel Filter to replace the restrictive (for my setup) factory filter in the OEM hanger.
I watched the video from Daves world and I just don't understand why these engines don't seem to make any power.... is it the cam grinds or the ports on the head? I wish I had a shop and time to be able to explore the generally poor power produced by these engines. There has to be a bottleneck somewhere. They make torque figures but not HP which suggests flow problems at the higher RPM ranges.
Yes, they don't flow great at all in the higher RPM ranges.
Here's some dyno graphs from my car.
It's 0.8 bar boost (spring pressure) and 5 degrees advance, 1.35 bar and -2 degrees advance,1.55 bar and about -3 degrees advance.
The boost is fixed from about 3900 to the redline.
Temps started at 18C and climbed to 33C at the end of the run.
This was done on 100 RON in Europe, as we don't have E85 in my country.
K04 turbo, 525cc bosch injectors, no cat, 2.5'' exhaust, bigger intercooler and piping and custom home ported intake manifold. Stock bottom end, stock camshafts, stock valves and everything else.
It's really knock limited on gasoline, you can't shove any more timing into it to make real power like you can on ethanol.
But maybe it's just my tuning 😂, because everything is done by me.
Right now the car is still in the conservative stage of the tuning process. I don't do my own tuning so the tune itself is locked. I'm in the process of updating the fuel system, see a few posts back.
From the last data log I took, I do know that the max boost was set to 1.0 Bar/14.7 PSI (spring pressure) with the airflow at 26.1 lbs/min [~197 g/s]. Engine speed was capped at 6,000 RPM and Fuel pressure was limited to 55 PSI [~379 Kpa] at the time of the log.
I do have the ZZP camshaft upgrade, ZZP Throttle Body, and the RacerX Intake Manifold, to reduce choke points. However, I believe the BIG difference makers are the Garrett G25-550 and my custom exhaust manifold, which is considerably larger than stock. According to Garrett, the G series turbochargers are the highest flowing turbochargers that they manufacture relative to their frame sizes. They are also priced accordingly. 💰💰💰
UPDATE: I actually got some Cruze time in today in the middle of February! It was 50 and Sunny today. That's very unusual for the area that I live.
I didn't do alot but it felt great to get outside and work. I evacuated the old E85 (All 7 gallons) out of the fuel tank, installed the reprogrammed fuel pump control module, and installed a new cowl drain cover assembly. I accidentally bought 2 so I have an extra if anyone needs one. PM me if interested.
Yup - it was quite nice out yesterday - it was mid-50s for us, and Sunny. I mean, even today it's still going to be almost 50 and sunny, which is nice to look at.
Saturday wasn't half-bad either - mid-low 40s and Sunny was acceptable to be outside trying to continue troubleshooting the Volt (to no avail).
Yup - it was quite nice out yesterday - it was mid-50s for us, and Sunny. I mean, even today it's still going to be almost 50 and sunny, which is nice to look at.
Saturday wasn't half-bad either - mid-low 40s and Sunny was acceptable to be outside trying to continue troubleshooting the Volt (to no avail).
I do. In my opinion, there's too much variability in pump E85 not to have one. Federal standards are laughably 85% to 51% for "flex fuel." Here, it varies from 85% to ~72% based on the time of year and where you get it. They do sell pure E85 in 5 gallon pales, but I'm not racing as of yet.
I do. In my opinion, there's too much variability in pump E85 not to have one. Federal standards are laughably 85% to 51% for "flex fuel." Here, it varies from 85% to ~72% based on the time of year and where you get it. They do sell pure E85 in 5 gallon pales, but I'm not racing as of yet.
I agree in its criticality - having dealt firsthand with changing E85 values coming up from winter blend to summer blend in my buddy's '88 5.0 - we'd have to quickly adjust fuel tables every time he filled up (the school term that applied was from April-June - so April and May we did lots of retuning before getting to class hopefully on time).
Even regular summer-blend E85 isn't typically all the way to 85%. Plus, having the sensor allows you to run gas as well, if needed. It's honestly a necessary part - and why I, at least right now, won't consider running E85 in the Cobalt. I'd absolutely love to, but there are no provisions in the factory computer to handle a Flex Fuel sensor, so I would need to go aftermarket with the computer and I'd really rather not.
UPDATE: The weather gave me another chance to put some more Cruze time in today. I installed the new dual pass ethanol sensor assembly and the in-line fuel filter.
