CJM 370z had boost envy, problem solved...
 

Just over 3 years and ~40,000 miles ago, I did my turbo install and tune. I made something like 524rwhp at 8psi. Plenty for the time being.

August 2013 I gave it another psi of boost and some more timing, and it made 586rwhp at 9.1 psi.

It really was plenty for this car. I daily drive this car. Admittedly... not as much this year because I bought a motorcycle a couple months ago and have been really enjoying it. However, the 370z is still my ONLY CAR so ya it gets driven regularly.

Well anyway... I kept seeing all you guys around here putting like 12 - 14 psi into your cars now. It really got me thinking - "what would my old lady do with 12 psi of boost?"

So tonight I went to find out.

671 RWHP
520 TQ
12.1 PSI BOOST - E85

100% Stock Engine - untouched
Greddy Twin 20G Turbo Kit w/ CJM modified wastegate setup
CJM S2SE Fuel System w/ Walbro 400 pump & ID1000cc Injectors
Greddy Dual 2.75" Exhaust
OS Giken Twin Clutch w/ RJM Pedal and Z Spd CSC
UpRev tuned by me - the only UpRev and the only E85 car I have ever tuned... so theres room for improvement!
HKS EVC6 Boost Controller
OEM GT-R Spark Plugs

I think that is everything I have done that is related to HP.

I almost stopped a little sooner. When I got up to 11.7psi it made 651rwhp and I said thats good enough. But then I could of swore I recalled someone already doing 650? Or am I wrong?

So I thought it made sense to take another step. In this graph picture you can see that it looks like my throttles are perhaps starting to shut early. I havent touched the throttle maps yet. Maybe I will mess with that and see if I can get the power to keep hanging on to redline.

I'm telling you my friend.....these engines are oodles more stout than anyone thinks, just gotta do it right! Your fuel system has not let me down yet and is a common link between our monsters... Coincidence? I think not!

The Greddy kit has always been top notch, with good fuel and someone smart behind the tune, this is not going to be a rarity! With those slicks, it's gonna be hard to beat on the strip.

First to 700hp(stock block!) gets a medal!

Grats my friend! I am just glad to see you are still in love with the 370!(and not driving a GTR like you were considering!) I cannot wait to hear your drag strip experience!

Oh and time to update your sig! haha!

Ya I have some people pushing me to go for 700rwhp. I might... but first I would like to get a couple passes out of it yet. Maybe in the next couple weeks I will strap it back down.

BTW my 28" tires are still drag radials! They just look like slicks because I got 28" tall and 15" wheels lol. They wont hook like a slick but I am on stock axles and "only" 670rwhp, so it should be plenty of tire for me!

Man Charles............I need to get on the bus and get that fuel system stat. 671 RWHP.....like OMG! I will contact you soon about the box of parts that I will be ordering soon.

Join us! Make those 20g's sing, man! They may not come on as hard and make the big torque #'s... but they come on smooth, which you can argue helps traction... and they unleash their fury on the top end. I bet you can hit 725rwhp by 1 bar boost!

1 bar is actually the boost pressure goal that I would like to settle on once I have the fuel system and manifold/plenum installed. I would love to run 700 RWHP, but I know that I need motor build and a few drivetrain adjustments to support my driving habits so that I can keep from breaking things, lol.

I am serious about ordering a box of goodies from you Feb/Mar 2015 at the latest. I am holding out for the CJM intake plenum though!

:rock:

thats also going to help the longevity of the stock rods for sure, GTR guys can get their rods (which look similar to ours) to bend around 550-600tq. those who know this seem to remove timing/boost from the low end and ramp up the tq from there.

2009 370z, Twin Turbo, E85. 671rwhp @ 12 psi - STOCK ENGINE!!!

AMAZING SIR :tup::tup:

I've had a gopro sitting in a shoebox for years. I charged it up this morning and read the instructions lol. Maybe I'll be able to capture some footage

I agree on torque and rod happiness.

But let's not talk about rods... If I just ignore the concern, everything should be ok!

Very impressive phunk!

Phunk, going through today and updating the finished builds thread with new numbers for people and a few new additions.
You have taken the crown for top stock internal engine. DJtood is pushing 658 right now (13.4PSI), and over 5 known builds that are above 600whp with stock internals.

Very impressive numbers! Good job! Fast Intentions just posted good numbers and a claim to the "highest HP/Torque pump gas/stock internal/370Z in the world!" Not even a day later and you break it lol. Did you modify any of the lines/seals to run e85?

I believe FI pump gas record still holds, pump gas usually means 91/93 fuel, and they cracked above 600whp where everyone else in the 600 range I believe is e85 right now.

Is e85 not "pump" gas? They sell it at gas stations.

PROPS:if I go FI I'm calling you for Fueling'
 

Respect, much respect to you and the numbers you lay down'.....I'm a N/A guy at heart, but laying that much power out of a stock block is also very "Man Style" :bowrofl:

~Reagan

Yes it is, but I think because it is not a "standard" across the board, plus e85 I believes is equal to 100 octane fuel it gets pushed out of the 'pump' gas classification.

Sending my car your way....
 

Gotcha. I've always considered pump gas as a fuel that is readily available at any local gas station. Either way, both setups laid down impressive numbers and further pushed the envelope of what these engines are capable of.

Nice stuff. You still using the OEM MAFs or did you upgrade those? Besides going to a return-style fuel system...the MAFs are limiting me right now.

Wow :tiphat: bravo.. E85 is becoming legendary!

E85 is not considered "pump gas" in the whole "power on pump gas" debate. You could definitely argue that its available at many pumps... but its sort of an apples to oranges comparison due its ability to ward off knock/detonation.

It allows you to run a little more boost and an ideal timing curve without nearly as much concern of running into knock.

E85 itself isnt a power adder for the most part (minus some small gains from dynamic compression - taking up more space in the combustion chamber), but it definitely lets you see more of what your existing power adders can do!

Stock MAFs in 2.75" MAF tubes. I will check my voltage today but I am pretty sure they were maxed out a couple psi ago. Danger Zone! lol

E85 is not a problem for anything in the stock fuel system, or in any of the CJ Motorsports fuel system products/kits!

Thanks for the compliments! I havent tried regular pump gas yet so I will let FI hold that one for now! And they will always smash me on the torque, my turbos are a little too big and non-ball bearing to hit hard enough to go for the torque record.

Wow, good job CJ. You beat our previously held stock block E85 record. I guess we just need to crack 700 to take it back! Hahaha...seriously, great work man!

As for the "pump gas" banter, when I make that claim, I am considering only 91/93 in the discussion. It is correct, E85 could be considered in the discussion, but that brings the "gray" into the conversation. Most tend to forget that E85 is very scarce out here on the west coast and we are subject to the phenomenal 91 octane.

Keep up the good fight buddy!

-Tony

AWESOME! you're not too far from me at all either! GTK there's a capable tuner around!!

Waiting patiently for someone to crack 700whp on stock block (e85 probably).

I definitely have turbo envy. Not for long though. Getting my 7at tranny built at level 10 in new Jersey on October 13th then it's play time

If my engine holds up for the next week or two, and nobody else does it first... ill go back and give it a shot. After this weekend I will barely be driving my car as I need to use it to finish the intake manifold project and eventually pull the motor out to start building it.

Curious to see your motor pulled and see how the internals have stacked up over the years. Any major or potential problems that could happen or showing signs up weakness.

Very Nice Charles,

Makes me want to get my hand on some E85 but its just such a hassle up here. Id be curious to see what your trap speeds are at now!

Congrats, its fun to push it further than you sometimes want to!

Also can I ask what your WOT timing values are (in uprevs tables) I believe I am in the mid 40s currently with my fuel, any more and im dealing with knock.

Knowing what power is available at 12#s I may try turning down the boost in favor for more timing and see how the fuel responds.

Hopefully the 28s dont slow me down too much. I mean... they will hook and launch well, but I have a slight concern that they are a tad tall for my horsepower. But I just didnt want to mess around, i wanted to know that what I was putting on would hook. Maybe they will work out perfect.


I expect to find wear in the cylinder heads. My heads are pretty noisy. Bottom end I bet looks like new (until that moment that it doesnt anymore)!

When I tune the timing, I actually dont even pay attention to the numbers in the map. I turn on map tracing and do the pull. Then I go back into the logging screen to tell it stop recording (immediately after the pass) so that the map trace line holds the pass in cache. I scroll through the log and look at the timing figures in degrees, and where I dont like what it was doing I look at the RPM and then go up or down in the cell the map trace line passed through at that RPM.

My timing isnt identical from pass to pass, my ecu is always trying to change itself due to tables somewhere else.. but generally I am running around 14 degrees at peak torque and 20-22 degrees by redline.

One of my passes at a little less boost decided to randomly touch 25 degrees by 6000rpm. That right there is why I want a standalone in this car (ditching the VHR heads)... THAT type of crap is exactly how people on pump gas lose motors.

I guess its much different on the rollers. I have the Mrs drive my car while I watch in real time and then edit the values I don't like as we go. Makes it much easier with 2 people handling the setup. I can see why Greg and Seb do it that way.

Ill have to take a look at one of my logs to see what I am at. I am just curious as to how much extra you are able to get away with with the E85. Its good to know that as long as us gas guys stay out of the knock our bottom ends should be more than fine considering most of us are in the 500s.

I love threads like this!

Acceleration video please!!!!

I would LOVE to try driving a built 7AT TT 370z... thats gotta be awesome.