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Old 01-05-2017, 11:54 PM   #1
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Default If you're wondering how the 300whp Sonic is doing...

It now makes even more power!
Still 100% stock engine with 54,000+ miles on the clock.



Was on the dyno to detune the car for upcoming track day. I had dropped the boost to 25psi and pulled 2deg of timing to keep it alive for a full day of 20min sessions at Barber Motorsports Park. After getting it set for the track, I turned the boost back up to what I run on the street, but kept the retarded timing in the tune to make sure nothing happened on the dyno that might ruin my track day. I'll go back with the timing back in it soon and see what it will really do, but I was pretty happy with 315/285
Here's a comparison of the road course tune vs. the street tune with retarded timing.
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If you're wondering how the 300whp Sonic is doing...-121516-new-best-vs-stocksof.jpg  
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285wtq@4,700
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Old 01-06-2017, 12:20 AM   #2
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Quote:
Originally Posted by MPFab View Post
It now makes even more power!
Still 100% stock engine with 54,000+ miles on the clock.



Was on the dyno to detune the car for upcoming track day. I had dropped the boost to 25psi and pulled 2deg of timing to keep it alive for a full day of 20min sessions at Barber Motorsports Park. After getting it set for the track, I turned the boost back up to what I run on the street, but kept the retarded timing in the tune to make sure nothing happened on the dyno that might ruin my track day. I'll go back with the timing back in it soon and see what it will really do, but I was pretty happy with 315/285
Here's a comparison of the road course tune vs. the street tune with retarded timing.
How the heck did you guys manage to get over 300 whp out of a stock 1.4?

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Old 01-06-2017, 12:38 AM   #3
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Originally Posted by tainopayute View Post
How the heck did you guys manage to get over 300 whp out of a stock 1.4?

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Just a larger turbo, custom exhaust manifold, larger intercooler, upgraded motor/trans mounts, and the best open air intake in the market.... Countless hours on the dyno, hp tuner,.... Etc etc etc....
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Old 01-06-2017, 01:02 AM   #4
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Originally Posted by carsNskis View Post
Just a larger turbo, custom exhaust manifold, larger intercooler, upgraded motor/trans mounts, and the best open air intake in the market.... Countless hours on the dyno, hp tuner,.... Etc etc etc....
A custom exhaust, a larger intercooler, aftermarket motor mounts, a good cold air intake and a tune done right can get this little 1.4 to make around 180 to 220 whp. So upgrading the turbo can add 80 to 100 whp on top of that?

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Old 01-06-2017, 01:47 AM   #5
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Originally Posted by tainopayute View Post
A custom exhaust, a larger intercooler, aftermarket motor mounts, a good cold air intake and a tune done right can get this little 1.4 to make around 180 to 220 whp. So upgrading the turbo can add 80 to 100 whp on top of that?
A stock turbo will never make 220whp or even 200whp for that matter. with everything you listed I made managed 189whp/250wtq on the stock turbo at 23psi peak, falling to 17psi at the limiter. As far as I know, that still the record for pump gas. I think another member made 5-7more on 100octane.
A MUCH, MUCH larger turbo will easily add well over 100whp.

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2013 Sonic HB MPFab"Test Mule"
Current EFR6258 numbers...
315whp@6,250
285wtq@4,700

Last edited by MPFab; 01-06-2017 at 01:52 AM.
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Old 01-06-2017, 01:52 AM   #6
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Quote:
Originally Posted by MPFab View Post
All that stuff plus a MUCH, MUCH larger turbo will easily add well over 100whp.

WOW,,, I'm saving that picture. Yeah, I think I'll use it as my wallpaper...

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Old 01-06-2017, 01:55 AM   #7
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Originally Posted by MPFab View Post
A stock turbo will never make 220whp or even 200whp for that matter. with everything you listed I made managed 189whp/250wtq on the stock turbo at 23psi peak, falling to 17psi at the limiter. As far as I know, that still the record for pump gas. I think another member made 5-7more on 100octane.
A MUCH, MUCH larger turbo will easily add well over 100whp.

How can I get my hands on a turbo like that and can the 1.4 handle the boost that that airplane turbine must be pushing on stock internals?

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Old 01-06-2017, 02:40 AM   #8
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Originally Posted by carsNskis View Post
Just a larger turbo, custom exhaust manifold, larger intercooler, upgraded motor/trans mounts, and the best open air intake in the market.... Countless hours on the dyno, hp tuner,.... Etc etc etc....
Hey bud, you were right. I apologize if I came across like if I was questioning you. I just did not know that you could add so much horse power by simply upgrading the turbo.

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Old 01-06-2017, 04:45 AM   #9
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I want to be Walkers next door neighbor and get my car that kind love.

Seriously that is sick
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Old 01-06-2017, 11:03 AM   #10
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Dam

I want to do this to my 1.8 XD

what intake are you running? And turbo?
Single or twin scroll?

Also how bad is the turbo lag? ( if and when I do turbo my 1.8 maybe eventually I'm kinda looking at something that comes in around 2.5/3k because I want to keep decent fuel economy


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