FI suggestions

will2045 · November 14th, 2011, 10:47 AM

So i had tossed around the idea of going FI even though my motor is 11:1 compression and the general thought on here was to run 4-6lbs of boost and I should be fine and still gain enough power to justify it. so with those needs in mind suggestions on a route? small turbo? blower? i've never FI a motor before but ive built the hell out of N/A motors including the one im running now. I would run an inter-cooler too for the record.

NickPohlAandP · November 14th, 2011, 12:02 PM

With that high of a compression ratio heat is going to be your enemy, so I would stay away from a roots or twin screw type blower. That leaves you with two options, centri or turbo. Of the two, I think a turbo is a better choice. I'm sure I'm going to catch some flak for saying that, but that's just my opinion. With a turbo, you will be able to see your 6 lbs of boost by 2500 rpm and hold it through the rpm range. With a centri, if all you're looking for is 6 lbs, you're not going to see it until it's at the top of the rpm range unless you go with a higher boost pulley and have a BOV set at 6 psi which is constantly pissing excess pressure overboard.

me2dumb4college · November 14th, 2011, 12:15 PM

Also, doesn't the type of cams he has come into play?

NickPohlAandP · November 14th, 2011, 12:34 PM

Originally Posted by me2dumb4college

Also, doesn't the type of cams he has come into play?

Sure does. What are they?

Eagle2000GT · November 14th, 2011, 12:34 PM

Yes, to some extent. N/A cams and FI cams are different but some work with both applications. If I understand it correctly I believe the difference is in the overlap. Too much overlap and the boost goes out the exhaust port at low rpms.

me2dumb4college · November 14th, 2011, 12:48 PM

Originally Posted by Eagle2000GT

Yes, to some extent. N/A cams and FI cams are different but some work with both applications. If I understand it correctly I believe the difference is in the overlap. Too much overlap and the boost goes out the exhaust port at low rpms.

Thats what I was getting at, since he said he's running a built NA motor, prolly has the NA Cams

NickPohlAandP · November 14th, 2011, 01:25 PM

Originally Posted by Eagle2000GT

Yes, to some extent. N/A cams and FI cams are different but some work with both applications. If I understand it correctly I believe the difference is in the overlap. Too much overlap and the boost goes out the exhaust port at low rpms.

You're right about that. On my turbocharged LT1's we ran a custom grind Comp cam with 119.5 degree lobe separation. The idle was so timid but when the boost came on it was a monster. I said this before in an older thread, but when I was doing those engines we had to have Land and Sea come and reprogram our dyno. The turbo would come on so fast that the dyno couldn't keep up with it and the engine would hit the rev limiter before the dyno could apply a load. It was pretty impressive (and crazy) to see.

slow02gt · November 14th, 2011, 02:09 PM

hmmmmm just throw a 150 pill on it..be cheaper and easier

will2045 · November 14th, 2011, 02:20 PM

its on the bottle but i want more. the cams are stage 5 N/A anderson motorsport. i dont know the overlap off top but i can call and ask. I actually had two other people suggest turbos first and not knowing a lot i was curious. ill look into the overlap and report back

joswo1980 · November 14th, 2011, 02:24 PM

Ya at 11:1 id run on juice, ul get way better results

NickPohlAandP · November 14th, 2011, 02:32 PM

Originally Posted by slow02gt

hmmmmm just throw a 150 pill on it..be cheaper and easier

Originally Posted by joswo1980

Ya at 11:1 id run on juice, ul get way better results

So true. You say it's on the bottle but you want more. Sorry to say but you're not going to get more going FI than you will with some spray at that CR. You're not going to be able to run enough boost to make another 100-150 hp without serious detonation issues. Stick with the bottle if that's you're looking for.

joswo1980 · November 14th, 2011, 02:36 PM

Originally Posted by will2045

its on the bottle but i want more. the cams are stage 5 N/A anderson motorsport. i dont know the overlap off top but i can call and ask. I actually had two other people suggest turbos first and not knowing a lot i was curious. ill look into the overlap and report back

Ya but u ain't gonna get that much more with fi running 11:1 than u do with nitrous, i just dont think it would b worth spending all that money for minamal gains. I think at the end the only true benifit ul c is that u won't have to keep filling a bottle

will2045 · November 14th, 2011, 02:39 PM

hmm well in that case it is what it and i guess we'll leave er at that, thanks guys.

joswo1980 · November 14th, 2011, 02:42 PM

I'm assuming ur engine is forged? If it is take that money and buy urself a Nitrous friendly intake a And a return fuel system and just spray the shit out it, it b faster and still cheaper

cbjohnson9 · November 14th, 2011, 02:43 PM

Forced induction cams also differ from N/A cams in that they place much more emphasis on the exhaust side. The car has no trouble getting the air into the motor with FI, but it needs help getting all that extra pressure out. Blower cams also benefit in being able to scavenge more heat out of the system due to exhaust emphasis.

What about blower and nitrous???

slow02gt · November 14th, 2011, 03:28 PM

if you want more do a direct ported 200 shot and if you have a fogger now make that a 50 pill(2 stage setup)...so a 250 shot will make you say FI what lol...

Eagle2000GT · November 14th, 2011, 04:20 PM

Originally Posted by cbjohnson9

Forced induction cams also differ from N/A cams in that they place much more emphasis on the exhaust side. The car has no trouble getting the air into the motor with FI, but it needs help getting all that extra pressure out. Blower cams also benefit in being able to scavenge more heat out of the system due to exhaust emphasis.

What about blower and nitrous???

I saw a dyno chart not long ago of a turbo at 10 psi with cams. It didn't really make any power until after 3500 rpms then it made a lot of power. I was wondering if maybe the wrong type of cams caused that.

joswo1980 · November 14th, 2011, 04:33 PM

Originally Posted by Eagle2000GT

I saw a dyno chart not long ago of a turbo at 10 psi with cams. It didn't really make any power until after 3500 rpms then it made a lot of power. I was wondering if maybe the wrong type of cams caused that.

To big of a turbo for its application I think possiably does that also

blownstang · November 14th, 2011, 07:06 PM

The new 5.0 has 11:1 compression and responds perfectly fine with a supercharger.

Nitmare67 · November 14th, 2011, 07:14 PM

GET THIS. STATIC COMPRESSION RATIO MEANS NOTHING. It DOES NOT matter if hes running 8:1 or 14:1. Dynamic compression is what you need to know. Figure out that and get back to us.

November 14th, 2011, 10:47 AM	#1
will2045 Enthusiast 2000 Mustang GT 13.3 @107 2.1 on street tires Join Date: Dec 2009 Location: MSU, Mi Posts: 951 iTrader: 1 reviews	FI suggestions So i had tossed around the idea of going FI even though my motor is 11:1 compression and the general thought on here was to run 4-6lbs of boost and I should be fine and still gain enough power to justify it. so with those needs in mind suggestions on a route? small turbo? blower? i've never FI a motor before but ive built the hell out of N/A motors including the one im running now. I would run an inter-cooler too for the record. __________________ BUY MY CAR!!! http://www.moddedmustangs.com/forums...0-mustang.html

November 14th, 2011, 12:02 PM	#2
NickPohlAandP I like boobs!!! 2000 GT convertible dunno Join Date: May 2011 Location: Brooklet, GA Posts: 2,827 iTrader: 2 reviews	With that high of a compression ratio heat is going to be your enemy, so I would stay away from a roots or twin screw type blower. That leaves you with two options, centri or turbo. Of the two, I think a turbo is a better choice. I'm sure I'm going to catch some flak for saying that, but that's just my opinion. With a turbo, you will be able to see your 6 lbs of boost by 2500 rpm and hold it through the rpm range. With a centri, if all you're looking for is 6 lbs, you're not going to see it until it's at the top of the rpm range unless you go with a higher boost pulley and have a BOV set at 6 psi which is constantly pissing excess pressure overboard. __________________ Last time you voted to prove you aren't racist. This time prove you're not an IDIOT!!! My Garage--->http://www.moddedmustangs.com/forums...-member-46919/

November 14th, 2011, 12:34 PM	#5
Eagle2000GT I Post Entirely Way Too Much 2000 Mustang GT 12.73@111.36 Join Date: Aug 2007 Location: Shelbyville, IN Posts: 5,311 iTrader: 1 reviews	Yes, to some extent. N/A cams and FI cams are different but some work with both applications. If I understand it correctly I believe the difference is in the overlap. Too much overlap and the boost goes out the exhaust port at low rpms. __________________ ProCharger P-1SC, 9 psi, STD 396/383; Uncorrected 388/375; SAE 383/370 Mods list in Garage.

November 14th, 2011, 02:09 PM	#8
slow02gt Hardcore Enthusiast 2002 mustang gt 11.38@119 Join Date: Feb 2008 Location: beaumont, texas Posts: 2,835 iTrader: 1 reviews	hmmmmm just throw a 150 pill on it..be cheaper and easier __________________ built motor,trickflow heads,logan intake,80mm comp turbo on the way..

November 14th, 2011, 02:20 PM	#9
will2045 Enthusiast 2000 Mustang GT 13.3 @107 2.1 on street tires Join Date: Dec 2009 Location: MSU, Mi Posts: 951 iTrader: 1 reviews	its on the bottle but i want more. the cams are stage 5 N/A anderson motorsport. i dont know the overlap off top but i can call and ask. I actually had two other people suggest turbos first and not knowing a lot i was curious. ill look into the overlap and report back __________________ BUY MY CAR!!! http://www.moddedmustangs.com/forums...0-mustang.html

November 14th, 2011, 12:15 PM	#3
me2dumb4college Enthusiast Join Date: Sep 2011 Location: Reston, VA Posts: 866 iTrader: 0 reviews	Also, doesn't the type of cams he has come into play?

November 14th, 2011, 02:24 PM	#10
joswo1980 Regular 2001 mustang gt no clue Join Date: Jan 2011 Location: troy ny Posts: 488 iTrader: 0 reviews	Ya at 11:1 id run on juice, ul get way better results __________________ zex blackout 125 shot,bbk 78mm tb,bbk CAI, flowmaster accel supercoils, diablo tuner. New setup in works VORTECH V2 SQ BOLTED ONTO A MMR 750

November 14th, 2011, 02:39 PM	#13
will2045 Enthusiast 2000 Mustang GT 13.3 @107 2.1 on street tires Join Date: Dec 2009 Location: MSU, Mi Posts: 951 iTrader: 1 reviews	hmm well in that case it is what it and i guess we'll leave er at that, thanks guys. __________________ BUY MY CAR!!! http://www.moddedmustangs.com/forums...0-mustang.html

November 14th, 2011, 02:42 PM	#14
joswo1980 Regular 2001 mustang gt no clue Join Date: Jan 2011 Location: troy ny Posts: 488 iTrader: 0 reviews	I'm assuming ur engine is forged? If it is take that money and buy urself a Nitrous friendly intake a And a return fuel system and just spray the shit out it, it b faster and still cheaper __________________ zex blackout 125 shot,bbk 78mm tb,bbk CAI, flowmaster accel supercoils, diablo tuner. New setup in works VORTECH V2 SQ BOLTED ONTO A MMR 750

November 14th, 2011, 02:43 PM	#15
cbjohnson9 Enthusiast 2001 Mustang GT Vert. Join Date: Sep 2010 Location: Kansas City Posts: 860 iTrader: 0 reviews	Forced induction cams also differ from N/A cams in that they place much more emphasis on the exhaust side. The car has no trouble getting the air into the motor with FI, but it needs help getting all that extra pressure out. Blower cams also benefit in being able to scavenge more heat out of the system due to exhaust emphasis. What about blower and nitrous??? __________________ Mods in garage

November 14th, 2011, 03:28 PM	#16
slow02gt Hardcore Enthusiast 2002 mustang gt 11.38@119 Join Date: Feb 2008 Location: beaumont, texas Posts: 2,835 iTrader: 1 reviews	if you want more do a direct ported 200 shot and if you have a fogger now make that a 50 pill(2 stage setup)...so a 250 shot will make you say FI what lol... __________________ built motor,trickflow heads,logan intake,80mm comp turbo on the way..

November 14th, 2011, 07:06 PM	#19
blownstang Hardcore Enthusiast Join Date: Jun 2010 Location: Chicago, IL Posts: 2,551 iTrader: 1 reviews	The new 5.0 has 11:1 compression and responds perfectly fine with a supercharger. __________________ 2003 DSG Mustang GT 5spd Full Bolt On's, Suspension, Built Rear, V1 S N/A: 266/300, 3,550lbs, 13.44 @ 100.5 1.77 60' Non-intercooled: 356/371, 3,575lbs, 12.81 @ 110.47 1.86 60' Intercooled: 362/370

November 14th, 2011, 07:14 PM	#20
Nitmare67 Hardcore Enthusiast Join Date: Feb 2010 Posts: 1,391 iTrader: 0 reviews	GET THIS. STATIC COMPRESSION RATIO MEANS NOTHING. It DOES NOT matter if hes running 8:1 or 14:1. Dynamic compression is what you need to know. Figure out that and get back to us. __________________ 99 Mustang GT 446rwhp, Vortech Aftercooled, Killer Chiller @12lbs, HPX, 3.73s, MGW, Battery Relocation, Intercooler Tank Relocated, CF DF clutch, Steeda Quick Release Quadrant, 75mm TB, Ported C&L Plenum, Stock PI Cams Advance 4 degrees, Pro Chamber

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