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One Slow Supra
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90 Posts
Discussion Starter · #1 ·
I need some info really bad. My car has PHR Stage 2 curently with 1200cc injectors and map ECU. Running super rich, I was wondering if I change with Siemens 850cc would be ideal and tunable. How much horsepower can I make with pump gas and race gas? Thanks for the info guys....
 

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Hardtopper
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2,478 Posts
You should be able to tune the 850's MUCH better than the 1200's. The 850's will support all the HP a 67mm could make and then some - approx 850-900HP at the crank.
 

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One Slow Supra
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90 Posts
Discussion Starter · #3 ·
Do you know if siemens injectors are any good? Thanks for your info.
 

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Hardtopper
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2,478 Posts
Seimens makes a good product. They're widely used successfully on multiple platforms.
 

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One Slow Supra
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90 Posts
Discussion Starter · #5 ·
Eventhough with Map Ecu? I know standalone will work fine....
 

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Registered
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13,581 Posts
I had 850cc Siemens injectors (I got them with my PHR Stg 2 fuel kit) and ran them with a gForce moded stock ECU and a MAPECU when I had my small single (PHR Stg 1 on a cast manifold). It ran great for many years. They are a quality injector from everything I know...although I had one freak fail on me last year so now I'm using ID1000's.
 

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SICK OF THE NUT SWINGERS
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1,728 Posts
Rocky I made 614 rwhp 91 oct on those injectors with map ecu 1 (old set up)..fyi
 

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One Slow Supra
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90 Posts
Discussion Starter · #10 ·
Thanks guys, and yes I'm selling my RC 1200cc
 

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Got boost?
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260 Posts
i have siemen 850cc with BL67, i had it for 4 years.... works great!
 
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