Low Boost

Nitmare67 · October 10th, 2011, 09:09 PM

LOL toss that bypass in the trash and get a real one.... Those are pretty good for 8lbs or so but after 10lbs you need to step up. Surprised you dont have any compressor surge.

SSG Pate · October 10th, 2011, 09:11 PM

No compressor surge at all It seems to be working great!! I can barely hear it blow off a little when i really get on it.

blownstang · October 10th, 2011, 09:35 PM

Originally Posted by SSG Pate

I had a 107.5 it seemed to loose as the tensioner was almost all the way extended. The 107 dosnt stress the tensioner to bad looks about right to me.

You should be good with that belt. 106.5-107 for that small of a pulley. The guy I bought my 3.12 from, which will be going on with the intercooler, was using a 107" Dayco belt.

Shaun03GT · October 10th, 2011, 09:36 PM

Originally Posted by blownstang

You should be good with that belt. 106.5-107 for that small of a pulley. The guy I bought my 3.12 from, which will be going on with the intercooler, was using a 107" Dayco belt.

This pisses me off reading this stuff. I cant run smaller then 108" without either wearing my tensioner out fast, or tearing a rib off my belt.

blownstang · October 10th, 2011, 09:38 PM

Originally Posted by SSG Pate

No compressor surge at all It seems to be working great!! I can barely hear it blow off a little when i really get on it.

Ya that bypass isn't much better than the stock Bosch one. It jus has a metal casing instead of plastic. I think Forge makes it. You shouldn't really hear that bypass becauase your recirculating the air. For 12psi + you should step up to a Vortech Mini Race/Maxflow or the Vortech Mondo if you'll want more boost in the future.

blownstang · October 10th, 2011, 09:38 PM

Originally Posted by Shaun03GT

This pisses me off reading this stuff. I cant run smaller then 108" without either wearing my tensioner out fast, or tearing a rib off my belt.

lol... i don't know man.

SSG Pate · October 10th, 2011, 09:40 PM

Looks like for now 12 PSI is my max boost, now that I just bought an intercooler it will go down even more.

Eagle2000GT · October 10th, 2011, 11:30 PM

Originally Posted by SSG Pate

The numbers were 431/407 on an auto non intercooled.

That would be 458/432 through a manual transmission. I don't know but that sounds pretty good for 12 psi.

Shaun03GT · October 10th, 2011, 11:35 PM

Sounds "okay" Idk, Bullitt5566 made 515rwhp with a V2, MHS stage 1 cams, and longtubes, and 11psi. Stock heads, stock bottom end.

SSG Pate · October 10th, 2011, 11:37 PM

Well Im buying a few things that I hope will bring these numbers up a bit!

Shaun03GT · October 10th, 2011, 11:43 PM

I think it will man.

SSG Pate · October 10th, 2011, 11:45 PM

I think it wil too I hope this get me to that 500 now!!

blownstang · October 11th, 2011, 12:35 AM

Originally Posted by Eagle2000GT

That would be 458/432 through a manual transmission. I don't know but that sounds pretty good for 12 psi.

Not really for having blower cams and an Edelbrock intake. There are three guys by me putting down 440-470rwhp on stock shorblocks with cams and 9-10psi intercooled through manuals.

Shaun03GT · October 11th, 2011, 12:38 AM

Maybe the motor just needs some more break in time. What kind of cams did you go with?

Eagle2000GT · October 11th, 2011, 08:36 AM

You have a stroked 4.75L motor. What compression ratio did you get?

Willy Mo · October 11th, 2011, 11:52 AM

Originally Posted by Nitmare67

SI trim should be making north of 15lbs BUT BUT. Everyone is getting caught up in boost and what THEIR motor does. We dont know what your cam specs are, how much overlap there is, how free flowing the heads are, exhaust system.... The Vortech intake is not THAT bad and IS BETTER THAN A PROCHARGER INTAKE. Procharger intakes may flow a little better but they suck hot air under the hood (not good). I didnt read what kind of maf your running but an HPX would work awesome (I run one in a very strange setup) and then just make your own power pipe. Should cost you about 75 bucks. You wont need any fittings on it if your blow through.

restriction in the heads, cams, exhaust would cause a higher boost reading as the air is not going through the engine as efficient.

blownstang · October 11th, 2011, 07:33 PM

Originally Posted by Shaun03GT

Maybe the motor just needs some more break in time. What kind of cams did you go with?

I believe he went with MPH. Usually you see 65-80rwhp gains with these.

Nitmare67 · October 11th, 2011, 07:50 PM

Originally Posted by Willy Mo

restriction in the heads, cams, exhaust would cause a higher boost reading as the air is not going through the engine as efficient.

Obviously..... thats exactly what I meant...

SSG Pate · October 12th, 2011, 06:54 AM

I dont buy the restriction in the heads yet at my power level maybe if I was at 500 Plus I could see it, but not at stock power levels.

October 10th, 2011, 09:09 PM	#21
Nitmare67 Hardcore Enthusiast Join Date: Feb 2010 Posts: 1,391 iTrader: 0 reviews	LOL toss that bypass in the trash and get a real one.... Those are pretty good for 8lbs or so but after 10lbs you need to step up. Surprised you dont have any compressor surge. __________________ 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

October 10th, 2011, 09:11 PM	#22
SSG Pate Premium Member 00 Mustang GT Vert/88 5.0 Join Date: Sep 2010 Location: Tennessee Posts: 1,766 iTrader: 3 reviews	No compressor surge at all It seems to be working great!! I can barely hear it blow off a little when i really get on it. __________________ Proud Iraq and Afghanistan War veteran Powered By MMR 4.75L Stroker, Tuned at Kurgan Motorsports

October 10th, 2011, 09:40 PM	#27
SSG Pate Premium Member 00 Mustang GT Vert/88 5.0 Join Date: Sep 2010 Location: Tennessee Posts: 1,766 iTrader: 3 reviews	Looks like for now 12 PSI is my max boost, now that I just bought an intercooler it will go down even more. __________________ Proud Iraq and Afghanistan War veteran Powered By MMR 4.75L Stroker, Tuned at Kurgan Motorsports

October 10th, 2011, 11:35 PM	#29
Shaun03GT I Post Entirely Way Too Much 2003 Mustang GT 1/8 - 7.92 @ 91.13mph 1/4 - 12.21 @ 115.84mph Join Date: Sep 2009 Location: Weymouth, MA Posts: 13,446 iTrader: 12 reviews	Sounds "okay" Idk, Bullitt5566 made 515rwhp with a V2, MHS stage 1 cams, and longtubes, and 11psi. Stock heads, stock bottom end. __________________ Vortech V1 Intercooled @ 11psi 394rwhp/392rwtq @ 9.5psi 415rwhp/400rwtq @ 11psi on Methanol Tuned By: Pete @ Performance Dyno Affordable Supercharger Build Guide Supercharger Info for Noobs

October 10th, 2011, 11:37 PM	#30
SSG Pate Premium Member 00 Mustang GT Vert/88 5.0 Join Date: Sep 2010 Location: Tennessee Posts: 1,766 iTrader: 3 reviews	Well Im buying a few things that I hope will bring these numbers up a bit! __________________ Proud Iraq and Afghanistan War veteran Powered By MMR 4.75L Stroker, Tuned at Kurgan Motorsports

October 10th, 2011, 11:43 PM	#31
Shaun03GT I Post Entirely Way Too Much 2003 Mustang GT 1/8 - 7.92 @ 91.13mph 1/4 - 12.21 @ 115.84mph Join Date: Sep 2009 Location: Weymouth, MA Posts: 13,446 iTrader: 12 reviews	I think it will man. __________________ Vortech V1 Intercooled @ 11psi 394rwhp/392rwtq @ 9.5psi 415rwhp/400rwtq @ 11psi on Methanol Tuned By: Pete @ Performance Dyno Affordable Supercharger Build Guide Supercharger Info for Noobs

October 10th, 2011, 11:45 PM	#32
SSG Pate Premium Member 00 Mustang GT Vert/88 5.0 Join Date: Sep 2010 Location: Tennessee Posts: 1,766 iTrader: 3 reviews	I think it wil too I hope this get me to that 500 now!! __________________ Proud Iraq and Afghanistan War veteran Powered By MMR 4.75L Stroker, Tuned at Kurgan Motorsports

October 11th, 2011, 12:38 AM	#34
Shaun03GT I Post Entirely Way Too Much 2003 Mustang GT 1/8 - 7.92 @ 91.13mph 1/4 - 12.21 @ 115.84mph Join Date: Sep 2009 Location: Weymouth, MA Posts: 13,446 iTrader: 12 reviews	Maybe the motor just needs some more break in time. What kind of cams did you go with? __________________ Vortech V1 Intercooled @ 11psi 394rwhp/392rwtq @ 9.5psi 415rwhp/400rwtq @ 11psi on Methanol Tuned By: Pete @ Performance Dyno Affordable Supercharger Build Guide Supercharger Info for Noobs

October 11th, 2011, 08:36 AM	#35
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	You have a stroked 4.75L motor. What compression ratio did you get? __________________ ProCharger P-1SC, 9 psi, STD 396/383; Uncorrected 388/375; SAE 383/370 Mods list in Garage.

October 12th, 2011, 06:54 AM	#39
SSG Pate Premium Member 00 Mustang GT Vert/88 5.0 Join Date: Sep 2010 Location: Tennessee Posts: 1,766 iTrader: 3 reviews	I dont buy the restriction in the heads yet at my power level maybe if I was at 500 Plus I could see it, but not at stock power levels. __________________ Proud Iraq and Afghanistan War veteran Powered By MMR 4.75L Stroker, Tuned at Kurgan Motorsports

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