Car Made 464hp on 20psi

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PDavis40
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Car Made 464hp on 20psi

Post by PDavis40 »

Put my car on the dyno and was pretty surprised with my numbers.
464hp and 477torque on 20psi, HX35...
On 12psi it made 370hp.
Have a video but forgot the graph at work,

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airman
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Post by airman »

Wow, those are some crazy numbers for 20psi on an HX35...would love to see the graph! I'm guessing that's on corn?
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PDavis40
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Post by PDavis40 »

airman wrote:Wow, those are some crazy numbers for 20psi on an HX35...would love to see the graph! I'm guessing that's on corn?
Yea I was very surprised.
That was fixed timing @ 17.4* too, can put a lot more in there. Yes its on corn.
Will post graph this week. And going to be tuning on some more in the near future.
Going to try to run 30psi, but I don't know if my pump can handle.
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Post by airman »

WOW only on 17°? That's impressive. Awesome job.

Can't wait to get my squirt setup up where yours is with COP and stuff!
Last edited by airman on Sun Apr 01, 2012 8:48 am, edited 1 time in total.
R.I.P. 1990 Red Hatch - DOHC 5 speed // CP 9:1 - Eagle Rods - Clevite - ARP // Holset HX35 - 20psi daily - MSPNP2
8-bit wrote:You could spend your life building a ladder to the moon, or work for 5 years to pay for a trip.
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Post by supakat »

Sounds great. I think I am around there. I did a Virtual Dyno log and it was good till about 450whp but I loss traction and it shot up. I am running 20* @ 20psi on an HX35 as well. What's your timing like if you don't mind me asking? Keep up the good work man.
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PDavis40
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Post by PDavis40 »

17.4* all the way across.
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Post by supakat »

When you increased timing, did you start to lose power? In other words, did you tune for MBT?

Thanks for the info.
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Post by PDavis40 »

Base timing is set.. I didn't mess with any timing. Dyno pulls are free to me so I wanted to see what it was doing and i needed to get my wideband fixed before I did anymore pulls. Dyno wideband was in the downpipe but I am having problems with my lc1.
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Post by airman »

PDavis40 wrote:Dyno wideband was in the downpipe but I am having problems with my lc1.
Up-to-date firmware? Fixed all my problems for me.
R.I.P. 1990 Red Hatch - DOHC 5 speed // CP 9:1 - Eagle Rods - Clevite - ARP // Holset HX35 - 20psi daily - MSPNP2
8-bit wrote:You could spend your life building a ladder to the moon, or work for 5 years to pay for a trip.
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PDavis40
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Post by PDavis40 »

airman wrote:
PDavis40 wrote:Dyno wideband was in the downpipe but I am having problems with my lc1.
Up-to-date firmware? Fixed all my problems for me.
Hm I should try that before I switch to an aem. Thanks!
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Post by casman86 »

My god that is a lot of power @20psi.
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Post by PDavis40 »

Here's the graph.
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Note this is my base... street tuned only. 17.4* of timing all across in boost. I plan on running somewhere around 22*.
Also air/fuel is good up until around 5700rpm when is gets really fat, like 10-11:1. So pulling that back up around 12.5 will help the loss of power up top. Just wanted to show what it made at peak for now. Going to be re-tuned and new graph will be up.
Also going to turn it up some more and see what a hx35 can really make.
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Post by supakat »

I would like to see what you find. We had a member on here running a Precision unit on 850cc's making 500whp @ 23 psi @ 18 degree's. I haven't made it to a dyno so I am unsure what degree works well but it looks like 17-18 is golden and beyond that, power starts to diminish.

viewtopic.php?t=53004
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Post by PDavis40 »

supakat wrote:I would like to see what you find. We had a member on here running a Precision unit on 850cc's making 500whp @ 23 psi @ 18 degree's. I haven't made it to a dyno so I am unsure what degree works well but it looks like 17-18 is golden and beyond that, power starts to diminish.

viewtopic.php?t=53004
Really? I plan on turning it up quite a bit and see what I get. I don't see why it wouldn't make more power on 22*.
His turbo is a little bigger than mine I think. Correct me if I'm wrong though.
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Post by supakat »

Yea, if you have too much advance, the fuel will ignite earlier(obvious) and the cylinder pressure will build up while the piston is on its way up, or reach peak pressure before TDC and lose power or slap the piston or detonation. I am pretty sure you know this but just wanted to put it out there.

I think I am having this issue now. With my 60-1 @ 20psi, I was seeing 17* of timing on my chipped ecu and added 3* with my emanage for a total of 20*. I then swapped the HX35 and I did a datalog the other day. I was around 20* on my chipped ecu and 3* on emanage for overall 23*. Unfortunately, I damaged my greddy cable and cannot retard the timing. So my best bet is to install my squirt asap. The car is not moving like it did with the 60-1 based on butt dyno, vid comparison and logs. I haven't seen any knock @ 20psi but stopped boosting at that level until I get my squirt in and have a one stop shop ecu to tune.
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Post by PDavis40 »

I have never seen knock on e85. Friends of mine have ran 25* on big turbos with 40psi and haven't seen anything. This was on a 4g63 but still the same concept. The worst thing about e85 is that since it wont knock is that the cylinder pressure gets too high and lift the head as far as I've seen.
I have seen e85 knock but it was when he was trying to get the car to build boost on a stall with an unknown amount of nitrous(-6 line) into the turbo while on the stall. It knocked a whole lot :/,
I think I'm safe. I'll turn it up until I don't see any more gains and back it down some. I'll report with my findings when I do.

FYI I'm on 9:1 compression.
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Post by supakat »

Yea I wish I had access to a dyno to report my findings as well. I seen slight knock once with high rpm light throttle. I think it was due to AFR than timing but I quickly fixed it. I am running wiseco 9:1. Your running 264's and I am on 248's. So hopefully, we can get some more good info on this thread.
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Post by JankiS13 »

Are you running a twin-scroll stock turbine housing, or something else?
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Post by BADA$$240 »

Hey Supakat how much were you making on that 60-1@20psi setup?
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Post by supakat »

BADA$$240 wrote:Hey Supakat how much were you making on that 60-1@20psi setup?
Dyno logs show 407whp.
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Post by sr20drag »

SO is this with the oem 12cm2 T4 turbine housing or a BEP T3? Damn impressive!! Nistune? Needs more timing up top for sure. The car should pull all the way to redline with the HX35. Here is my dyno tune when I went fro gt2871R to an HX35 with a stock 12cm2 housing maybe 4 years ago..... **** JWT rom tune with 15° timing and 93 pump was killing the potential. My 20g car made more than this with nistune and E85!! Live and learn....

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Post by PDavis40 »

JankiS13 wrote:Are you running a twin-scroll stock turbine housing, or something else?
Just a vband stock housing. Not twin scroll.
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Post by Super Coupe »

HX series didnt come with vband housings.....

However, HY's I believe came with the Vband and non twin scroll housing turbine housings. It is essentially the same compressor side, but with a smaller turbine wheel and turbine housing.

http://www.dsmtuners.com/forums/turbo-s ... t-8-a.html
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Post by PDavis40 »

Well then I dont know. Bought the turbo for $120 locally, and have used it ever since.
Non divided, 3" vband out. People have told me its a stock exhaust housing.
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Post by casman86 »

All hx35 are divided as far as I know. Does it have ”9cm” cast on the exhaust housing? If so its an hy35, off of an automatic. They have the smaller undivided housing.
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Post by TariqKa-t »

mph at a drag strip?
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Post by PDavis40 »

TariqKa-t wrote:mph at a drag strip?
Trapped 120 spinning in 3rd.. Was on 235/50/15 old tires.. :roll:
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Post by PDavis40 »

casman86 wrote:All hx35 are divided as far as I know. Does it have ”9cm” cast on the exhaust housing? If so its an hy35, off of an automatic. They have the smaller undivided housing.
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It does have hx35 on the comp side, maybe the exhaust housing is different?
You tell me..
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Post by Super Coupe »

Nope it is a hx35.

I see where you got the vband from, that is the backside of the turbine housing for the downpipe. The side that bolts to the CHRA should be something like 5 or 6 bolts.

That exhaust housing does look funny though. Maybe it is the angle. Did you have the internal wastegate welded shut?
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Post by PDavis40 »

Super Coupe wrote:Nope it is a hx35.

I see where you got the vband from, that is the backside of the turbine housing for the downpipe. The side that bolts to the CHRA should be something like 5 or 6 bolts.

That exhaust housing does look funny though. Maybe it is the angle. Did you have the internal wastegate welded shut?
There is no internal wastegate.
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