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Old 01-17-2018, 11:09 PM   #1
PDXREALTOR
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Default FP Green HTZ Max PSI on 97 octane

Setup is

Forged Pistons, stock rods/block
Catless DP
kb holy header and uppipe w/ turbosmart ewg 40,
TGV deletes w/phenolic spacers
Perrin FMIC with matching intake and Perrin 2.4" intake tube.
Fuel rails / DW 300 pump hardwired
IAG AOS VTA
Hybrid Boost via GS MBC
FP Green HTZ 8cm 2.4 inlet
Fuel is 97 octane

I'm currently running 11.8 AFR at 25.5-26.5 psi with zero knock. Timing at around peak torque is 10, and up to 20 at redline.

What do you think the max psi with some more fuel would be? 27? 28?

I've pulled fuel down and back up, same with timing, and don't notice much power difference (road dyno) so I'm wondering if a PSI or two of boost won't get me some power.
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Old 01-18-2018, 11:33 AM   #2
Scottie15
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Not sure, but I'll be able to tell you what my green hits in a few weeks. Built block with forged pistons, rods, ID 1,300cc, fuel pump, TGV deletes, FP Green HTZ with 84mm inlet and other supporting mods on 93 octane.
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Old 01-18-2018, 11:43 AM   #3
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Originally Posted by Scottie15 View Post
Not sure, but I'll be able to tell you what my green hits in a few weeks. Built block with forged pistons, rods, ID 1,300cc, fuel pump, TGV deletes, FP Green HTZ with 84mm inlet and other supporting mods on 93 octane.
You're going to really like this Green. Grab some Torco. at 95.5 I easily hit 450/400 @ 24 psi of boost.

I can hook you up with Torco just PM me.

Last night I was out and got up to 500/450 on 97 octane. That was third gear though. I had to turn the timing down in 4th which left me at 450/430.

Still have some playing left. And, if all else fails I buy Torco by the 5 gallon bucket so I'll just up my octane. Boost is addicting.
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Old 01-18-2018, 01:43 PM   #4
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You're going to really like this Green. Grab some Torco. at 95.5 I easily hit 450/400 @ 24 psi of boost.

I can hook you up with Torco just PM me.

Last night I was out and got up to 500/450 on 97 octane. That was third gear though. I had to turn the timing down in 4th which left me at 450/430.

Still have some playing left. And, if all else fails I buy Torco by the 5 gallon bucket so I'll just up my octane. Boost is addicting.
Nice numbers! I had/have a moderate goals for this build, wanting close to 400 whp. Not going to complain if it ends up being more. I'm on a break in map at the end of my break in on the motor. Just waiting for dyno day.

What does your green put out for wastegate pressure? Mine is at 18.5-19 psi with the 3 port out of the equation running straight wastegate pressure. I'm also happy with the responsiveness of the turbo. Perfect balance of lag and capabilities for me since my cars a daily.

About the Torco, I appreciate the offer, but I'll pass. Lol I even passed on going Flex Fuel. Figure I would run the build on 93 for a while, then go Flex.
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Old 01-18-2018, 01:56 PM   #5
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Nice numbers! I had/have a moderate goals for this build, wanting close to 400 whp. Not going to complain if it ends up being more. I'm on a break in map at the end of my break in on the motor. Just waiting for dyno day.

What does your green put out for wastegate pressure? Mine is at 18.5-19 psi with the 3 port out of the equation running straight wastegate pressure. I'm also happy with the responsiveness of the turbo. Perfect balance of lag and capabilities for me since my cars a daily.

About the Torco, I appreciate the offer, but I'll pass. Lol I even passed on going Flex Fuel. Figure I would run the build on 93 for a while, then go Flex.
It's addicting. I upgraded to a Cobb 20g and was at 380 at with OEM pistons. I knew I was on borrowed time, and I was not giving any power back, so I put in forged pistons, KB oil pickup/tray and some other safety and go fast items while the motor was out. Left the bottom end stock.

My Green puts out 16 - 17 wastegate on a Turbosmart 40mm EWG.

You're lucky if you have the choice to go flex! I'd already be at high fives if I had e85.
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Old 01-18-2018, 02:10 PM   #6
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It's addicting. I upgraded to a Cobb 20g and was at 380 at with OEM pistons. I knew I was on borrowed time, and I was not giving any power back, so I put in forged pistons, KB oil pickup/tray and some other safety and go fast items while the motor was out. Left the bottom end stock.

My Green puts out 16 - 17 wastegate on a Turbosmart 40mm EWG.

You're lucky if you have the choice to go flex! I'd already be at high fives if I had e85.
I went from a turbo back and tune on my car to a fully built block and everything else. Didn't want to even begin stressing more about the stock pistons. I'm anxious to see what I put down on the dyno!

And yes, e85 is on the list for the future. Probably in about a year I'll add flex fuel and the Killer B headers.
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Old 01-18-2018, 02:14 PM   #7
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I went from a turbo back and tune on my car to a fully built block and everything else. Didn't want to even begin stressing more about the stock pistons. I'm anxious to see what I put down on the dyno!

And yes, e85 is on the list for the future. Probably in about a year I'll add flex fuel and the Killer B headers.

Nice!!
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Old 01-18-2018, 02:41 PM   #8
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Enough of derailing this thread lol. Hopefully somebody chimes in and answers your original question. I'll be following this thread and post my experiences here if you don't mind.
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Old 01-19-2018, 12:28 PM   #9
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Enough of derailing this thread lol. Hopefully somebody chimes in and answers your original question. I'll be following this thread and post my experiences here if you don't mind.
No problem at all. Please do post your results here. Im excited to see them!
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Old 01-20-2018, 12:01 AM   #10
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EGTs?
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Old 01-20-2018, 12:12 AM   #11
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EGTs?
I do not have a gauge. But, I've since richened it up to 11.2 fading to 10.8. I also had to pull some timing in 4th gear.

In 3rd I'm up about 25-30 hp and 30 tq. 4th I break even.

Thinking of upping my octane so I can get up more in 4th.

I only removed . 35 * in 4th gear so at 97 octane I'm close. Almost too close for comfort. I'm thinking 1 more octane point, get the timing back in 4th and go for 28psi.... See where that gets me. If need be for some cushion I can add 2 full octane points

Last edited by PDXREALTOR; 01-20-2018 at 01:13 PM.
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Old 02-08-2018, 07:31 PM   #12
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What about max boost on 100 octane?
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Old 02-16-2018, 03:58 PM   #13
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Lol. Not everyone at once.
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Old 02-16-2018, 04:07 PM   #14
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Totally forgot about this thread. I got my tune and was let down lol. We kept the car very conservative because I'm a paranoid bastard! The tuner was able to squeeze right around 374 at 25psi from the motor, but she didn't like it.

We settled at 352whp/337tq while keeping her conservative and happy. While she feels great to drive, it left me wanting more from this turbo. So I ordered a few parts that were holding me back. Should have them installed and tuned in about a month, then I should surpass 400 conservatively.
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Old 02-16-2018, 04:27 PM   #15
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Totally forgot about this thread. I got my tune and was let down lol. We kept the car very conservative because I'm a paranoid bastard! The tuner was able to squeeze right around 374 at 25psi from the motor, but she didn't like it.

We settled at 352whp/337tq while keeping her conservative and happy. While she feels great to drive, it left me wanting more from this turbo. So I ordered a few parts that were holding me back. Should have them installed and tuned in about a month, then I should surpass 400 conservatively.
Go to the drag strip and see what you trap. Chasing numbers can be pointless sometimes.
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Old 02-16-2018, 04:30 PM   #16
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What parts held you back?

What AFR and timing are/were you running?
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Old 02-16-2018, 04:58 PM   #17
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I feel stuck at 27 psi.

Upping the octane to 100 and the boost to 27.5 PSI did not really change power. Backing it back down to 27 in 3rd 27.5 in 4th has me over 500/450 on the road dyno. The extra octane allowed me to add back some timing in 3rd/4th gears to get me through peak torque without knock.

When I upped it the extra .5 I think I was just blowing hotter air. After lowering it to 27.0 (in 3rd) I'm able to run consistently with 1.05* taken out of third and 2.45* taken out of 4th.

Base timing is ~10 @ peak tourque and 20 redline. Target AFR is 11.4-11.5 with a taper at the end.

Boost tapers to ~ 25.5 psi at redline. I think I could add a couple degrees up top but, I want to put the 3" intake stuff on first. I'll fine tune the base timing last. I'll likely flip the map and add timing per gear vs. remove timing per gear.

I was going to go to the dyno tomorrow for a quick couple of pulls but I'm going to hold off for bit.

I have a 3" CAI and inlet to install. Doubt it will do much but it can't hurt.

Here's a road dyno graph of a couple 3rd gear pulls done at separate times, and a 4th gear pull.

3rd


4th


I was concerned with the area between 5-6k and was thinking it needs a bump in timing (to the primary table) but, then I looked at my original dyno charts and the power curve looks the same.

The torque curve is more flat though. Most likely because the turbo can hold 24psi more efficiently than 27.
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Old 02-16-2018, 04:59 PM   #18
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Go to the drag strip and see what you trap. Chasing numbers can be pointless sometimes.
I'm well aware that chasing numbers is pointless at times, most of the time lol. There's no doubt that the car is indeed faster, I was just wanting to visually see 400 on a graph.

To be 100% honest, I've never launched this car and don't plan on it. What I truly care about is the torque pull exiting a corner or just dropping a gear and flooring it. That kind of power is what I'm after. If that makes sense?
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Old 02-16-2018, 05:03 PM   #19
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What parts held you back?

What AFR and timing are/were you running?
Not sure on the timing, but my AFR floats around 10.5-10.8. Like I said, pretty conservative lol.

As far as parts, the main one was my poor choice in a downpipe. I acquired it long before my build and it was damn near free lol couldn't complain at the time. The cat in the DP is pretty restrictive. So I ordered an Invidia catless DP and decided to throw the Cobb flex fuel kit with fuel pressure regulator at it.
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Old 02-16-2018, 05:12 PM   #20
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Not sure on the timing, but my AFR floats around 10.5-10.8. Like I said, pretty conservative lol.

As far as parts, the main one was my poor choice in a downpipe. I acquired it long before my build and it was damn near free lol couldn't complain at the time. The cat in the DP is pretty restrictive. So I ordered an Invidia catless DP and decided to throw the Cobb flex fuel kit with fuel pressure regulator at it.
What PSI did you end up at? From all the reading I've been doing I'm not surprised it didn't like 25 psi on 93 pump. Not out of this world high PSI, but seems a bit much.

I have the same downpipe. Flex Fuel? lol.... and here we go....
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Old 02-16-2018, 05:15 PM   #21
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I'm well aware that chasing numbers is pointless at times, most of the time lol. There's no doubt that the car is indeed faster, I was just wanting to visually see 400 on a graph.

To be 100% honest, I've never launched this car and don't plan on it. What I truly care about is the torque pull exiting a corner or just dropping a gear and flooring it. That kind of power is what I'm after. If that makes sense?
^^ This 100% for me too.

I will add to that - with the amount of money I've spent, I like the ability to ditch Mustangs, Audi's, BMWs, etc.
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Old 02-16-2018, 05:21 PM   #22
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What PSI did you end up at?.....................Flex Fuel? lol.... and here we go....
Ended up at at 23psi and the car was happy. The motor being happy is my ultimate concern.

And yes, flex fuel. Personal preference. It's fairly common around my area. And I've seen several local cars pushing stupid power with e85.
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Old 02-16-2018, 05:23 PM   #23
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...........with the amount of money I've spent, I like the ability to ditch Mustangs, Audi's, BMWs, etc.
Exactly lol. Coworker of mine has a pretty nice BMW and thinks that there isn't a daily driven 4 banger than can give him a run for his money or pull from him. He also refuses to do any kind of race against one..........
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Old 02-16-2018, 05:25 PM   #24
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Ended up at at 23psi and the car was happy. The motor being happy is my ultimate concern.

And yes, flex fuel. Personal preference. It's fairly common around my area. And I've seen several local cars pushing stupid power with e85.

Who wouldn't want flex fuel? I dream of corn. I was just kind of laughing because well...... flex fuel is like the modders enabler. Don't be surprised when you're taking off the green for black because your corn is enabling you to do so with ease.
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Old 02-16-2018, 05:34 PM   #25
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Who wouldn't want flex fuel? I dream of corn. I was just kind of laughing because well...... flex fuel is like the modders enabler. Don't be surprised when you're taking off the green for black because your corn is enabling you to do so with ease.
Shhhhh don't tell me that!!!!!! I've already decided that I'm not doing that. The more I hear it, the more I'll prolly wanna do it in the future....
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