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Review: FP 71HTA

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Old Feb 26, 2016 | 09:08 AM
  #151  
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From: South NJ transplant from SoCal originally
Originally Posted by kaj
Man, I wish CA had 93 oct....
haha ya. I moved out here from Los Angeles I was like "wow this is like race gas compared to cali 91"
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Old Feb 26, 2016 | 09:18 AM
  #152  
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Originally Posted by KFC-AWD
haha ya. I moved out here from Los Angeles I was like "wow this is like race gas compared to cali 91"

Right? I guess if i consider how poorly our cars would run on 89.... I can see how an extra two points would help.
On 91, e85 is tempting... with 93, I'd never give it a second thought.
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Old Feb 26, 2016 | 09:27 AM
  #153  
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From: South NJ transplant from SoCal originally
Originally Posted by kaj
Right? I guess if i consider how poorly our cars would run on 89.... I can see how an extra two points would help.
On 91, e85 is tempting... with 93, I'd never give it a second thought.
I would think using 91 vs E85 you would never give it a second thought to switch?
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Old Feb 26, 2016 | 09:38 AM
  #154  
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Originally Posted by KFC-AWD
I would think using 91 vs E85 you would never give it a second thought to switch?
Naw. It's not for me.
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Old Feb 26, 2016 | 07:12 PM
  #155  
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Originally Posted by KFC-AWD
Sure, here is the graph on 93 octane. Also included the graph with both 93oct vs E85 with smoothing at 2.




Thank you for posting this comparison, but this now gives me pause.

On pump gas, your hitting 300ft @4k, which is considerably slower than your e85 graph and exactly what I'm hitting on my green.

My experience is that e85 allows higher timing and leaner mixtures on the top end, so I'm hoping your pump gas graph is a result of starting your pull later in the rev range, is that accurate?

On pump gas, if you start the pull around 2 or 2.5k in 3rd do you see 300ft sooner...like around 3500?

Here's my green self tuned vd graph for comparison:
https://www.evolutionm.net/forums/evo-dyno-tuning-results/688267-400whp-fp-green-stock-block-self-tuned-93-a.html
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Old Feb 26, 2016 | 07:38 PM
  #156  
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Originally Posted by tsitalon1
Thank you for posting this comparison, but this now gives me pause.

On pump gas, your hitting 300ft @4k, which is considerably slower than your e85 graph and exactly what I'm hitting on my green.

l
I checked my 91 and e85 graphs and they both see 300ftlbs right around the same place (3700ish, starting at 2500-2800rpm). i assume it's to keep me from bending a rod or something.

Last edited by kaj; Feb 27, 2016 at 07:48 AM.
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Old Feb 26, 2016 | 08:00 PM
  #157  
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Originally Posted by tsitalon1
Thank you for posting this comparison, but this now gives me pause.

On pump gas, your hitting 300ft @4k, which is considerably slower than your e85 graph and exactly what I'm hitting on my green.

My experience is that e85 allows higher timing and leaner mixtures on the top end, so I'm hoping your pump gas graph is a result of starting your pull later in the rev range, is that accurate?

On pump gas, if you start the pull around 2 or 2.5k in 3rd do you see 300ft sooner...like around 3500?

Here's my green self tuned vd graph for comparison:
https://www.evolutionm.net/forums/ev...uned-93-a.html
You are reading the graph wrong. Dotted lines are torque. E85 is at approx 390 at 4K and 93 is approx 300 at 4k. Everything is higher and sooner on e85 in that comparison graph
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Old Feb 26, 2016 | 08:12 PM
  #158  
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Originally Posted by razorlab
93 is approx 300 at 4k.
I think that's what he said.
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Old Feb 26, 2016 | 08:31 PM
  #159  
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He said E85 was hitting slower which is incorrect
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Old Feb 26, 2016 | 08:32 PM
  #160  
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Wait, never mind I read it wrong! My mistake. I blame a day of snowboarding and the whiskey I'm drinking now...
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Old Feb 26, 2016 | 08:47 PM
  #161  
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...lucky.
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Old Feb 26, 2016 | 08:57 PM
  #162  
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Originally Posted by razorlab
Wait, never mind I read it wrong! My mistake. I blame a day of snowboarding and the whiskey I'm drinking now...
Lol, no worries, yeah I'm comparing my pump gas fp green graph to kfc's pump graph.

I would think the 71hta would spool faster on pump.. I believe it may be that he started the run much later on pump than e85.

In my experience I couldn't get my green to spool much faster on e85, so I must be doing something wrong I guess.

As noted above, I'm thinking of downgrading from the green to the 71hta, but these graphs haven't really showed my any better spool, unless I compare my green's e85 to KFC's e85....then I see a ~700rpm spool advantage at 4500rpm.
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Old Feb 27, 2016 | 05:45 AM
  #163  
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I just went back and checked my dyno graph, i hit 300wtq at ~3300-3400 rpm on 93 with the 71HTA. Stock block.

Hopefully that helps?
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Old Feb 27, 2016 | 10:17 AM
  #164  
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Originally Posted by KFC-AWD
It is my car he is tuning. Here is the graph on E85. On 93 Oct the VD showed 376 HP and I did 114mph in the 1/4 mile with that tune of 26 falling to 24psi at the top.

The go fast mod list of mods on my car are:
FP 71 HTA with 84mm cover (not ported at all, stock 10.5cm exhaust housing)
Wally 255 pump
3 bar boost solenoid
RC 1200cc's
2.75 Espelir downpipe
Espelir 3" catback
3" testpipe
HKS 264/264
Cheapie open air filter
FP 84mm intake hose
Mishimoto lower IC pipe
ARP Head studs



I also have the HKS 264 cams and considering this turbo. Personally, I don't feel comfortable going over 400 for torque (probably would keep at 385 max).

I'm curious to see what kind of power is possible with this turbo while keeping the torque around 400 or lower. I've seen Ekobz do 450/400 with E85 and stock cams and a couple others with pretty aggressive cams put up similar numbers on pump gas.

Personally, I'm strongly considering this turbo and running it with E85 and debating whether to upgrade the HKS 264 cams to GSC S2s. I also plan on replacing my timing belt and getting head studs so that would be the ideal time to have the cams put in. However, I really don't want to spend the $1,000 plus on the S2 cams if its just going to send me way over the ~385 torque threshold.
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Old Feb 27, 2016 | 11:07 AM
  #165  
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Power isn't completely dependent on torque. Max power is as much as you can make and you can keep the torque anywhere you need.
Where do you live that cams are $1000+?

Last edited by kaj; Feb 27, 2016 at 11:12 AM.
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