[thebigragu99]

Just what the tittle reads,has anyone done this on straight pump gas,with a 135 or 335?

[enrita]

With no bolt ons? Impossible.

[acdHQK713K]

Originally Posted by enrita

With no bolt ons? Impossible.

I would say even with bolt ons, impossible.

[ttbmer]

Originally Posted by Stangorang

I would say even with bolt ons, impossible.

Lmao

[Mike@N54Tuning.com]

Originally Posted by thebigragu99

Just what the tittle reads,has anyone done this on straight pump gas,with a 135 or 335?

Map 2 has a target of 14.5psi. Average dynojet output is 375-390rw.

Mike

[thebigragu99]

Originally Posted by enrita

With no bolt ons? Impossible.

with fbo..
for example.

I have.

3 inch d.p.kittyless
er race core with piping short route
dci
rear cat delete,and made less bends.
stock muffler with flap opened

[thebigragu99]

Originally Posted by Mike@N54Tuning.com

Map 2 has a target of 14.5psi. Average dynojet output is 375-390rw.

Mike

I seen the gauge go to 15.to 15.5 with 14.5 at 6,600 rpms

[acdHQK713K]

Originally Posted by thebigragu99

with fbo..
for example.

I have.

3 inch d.p.kittyless
er race core with piping short route
dci
rear cat delete,and made less bends.
stock muffler with flap opened

You won't hit 400 whp. Period.

[spiike32]

Op... use the search button

Dyno chart compilation. Just look what what people have in their mod lists
http://www.e90post.com/forums/showthread.php?t=416797

JB4 + Helix intercooler + catless downpipes = 393whp
http://www.e90post.com/forums/showpo...&postcount=154

JB4 + Full Bolt ons = 400 whp
JB4 + Full Bolt ons + meth = 420 whp
http://www.e90post.com/forums/showthread.php?t=473255

DCI JB4 93+ octane = 370whp
http://www.e90post.com/forums/showthread.php?t=588574

Dynos to me are completely relative because of temps, elevation, how well the car is running, etc. Mine is like a bat out of hell and meets your title requirements with some extra bolt ons. Also you should not be running map 2 unless you have catless downpipes at a minimum.

[335i101]

Originally Posted by thebigragu99

with fbo..
for example.

I have.

3 inch d.p.kittyless
er race core with piping short route
dci
rear cat delete,and made less bends.
stock muffler with flap opened

Muffler flap open=600hp easy

[Jeff@TopGearSolutions]

If you get on the right dyno in the right conditions anything is possible.

[Bagelfast]

^ +1000 cant stress that enough. 400 on pump gas is def possible, esp if you get a custom map on Jb4.

[thebigragu99]

Originally Posted by spiike32

Op... use the search button

Dyno chart compilation. Just look what what people have in their mod lists
http://www.e90post.com/forums/showthread.php?t=416797

JB4 + Helix intercooler + catless downpipes = 393whp
http://www.e90post.com/forums/showpo...&postcount=154

JB4 + Full Bolt ons = 400 whp
JB4 + Full Bolt ons + meth = 420 whp
http://www.e90post.com/forums/showthread.php?t=473255

DCI JB4 93+ octane = 370whp
http://www.e90post.com/forums/showthread.php?t=588574

Dynos to me are completely relative because of temps, elevation, how well the car is running, etc. Mine is like a bat out of hell and meets your title requirements with some extra bolt ons. Also you should not be running map 2 unless you have catless downpipes at a minimum.

I am running catless ,even the rear ones are deleted..I think the rear cats are good for 15 whp..I have yet to see a jb4 map 2 fbo with rear catless dyno..Yes the flap makes a difference opened,maybe not 600 whp..lol..Jeff I rememeber seeing a jb4 fbo map 2 on 335 make 405 whp ,it was posted on youtube some time ago.

[jdbretz]

Originally Posted by thebigragu99

I am running catless ,even the rear ones are deleted..I think the rear cats are good for 15 whp..I have yet to see a jb4 map 2 fbo with rear catless dyno..Yes the flap makes a differnce opened.Jeff I rememeber seeing a jb4 fbo map 2 on 335 make 405 whp ,it was posted on youtube some time ago.

At the boost levels map 2 run, you will get little to no gains from removing the rear cats. 3-5 whp maybe if even that much. The flap does not make any difference in power, only sound as the flap will naturally open at WOT under normal conditions. There may have been a FBO JB4 on map 2 that did make 405 whp, however since that is not common I would say that dyno probably just read high.

[thebigragu99]

Originally Posted by jdbretz

At the boost levels map 2 run, you will get little to no gains from removing the rear cats. 3-5 whp maybe if even that much. The flap does not make any difference in power, only sound as the flap will naturally open at WOT under normal conditions. There may have been a FBO JB4 on map 2 that did make 405 whp, however since that is not common I would say that dyno probably just read high.

Don't matter what map your on a,when eliminating a restriction like the cats,the car makes more power.If you want to know the rear cat's might be as restricted as the primarys.

[RnmEvo9]

Just go to a dyno and quit speculating already.

[jdbretz]

Originally Posted by thebigragu99

Don't matter what map your on a,when eliminating a restriction like the cats,the car makes more power.If you want to know the rear cat's might be as restricted as the primarys.

The exhaust isn't all that restrictive at lower boost levels. As you increase your boost higher it becomes more restrictive because there is more exhaust flowing. That is when you get the most benefit from a free flowing exhaust setup. Go ahead and do a dyno at stock boost and tell me how much power you gain from an exhaust. To say that the map doesn't matter is completely false because the map determine how much boost you are running. You will NOT gain 15 whp from removing the secondary cats especially at only 14.5 lbs of boost. The rear cats are not nearly as restrictive as the primary ones because of their location. The primary ones are so restrictive because they are almost immediately post turbo.

[thebigragu99]

Originally Posted by jdbretz

The exhaust isn't all that restrictive at lower boost levels. As you increase your boost higher it becomes more restrictive because there is more exhaust flowing. That is when you get the most benefit from a free flowing exhaust setup. Go ahead and do a dyno at stock boost and tell me how much power you gain from an exhaust. To say that the map doesn't matter is completely false because the map determine how much boost you are running. You will NOT gain 15 whp from removing the secondary cats especially at only 14.5 lbs of boost. The rear cats are not nearly as restrictive as the primary ones because of their location. The primary ones are so restrictive because they are almost immediately post turbo.

Well I have 135 and the exhaust is more restrictive then the 335.I looked into both cats,and they looked almost indentical inside as far as the honey comb flow.Your telling me running 6 to 7 psi more boost then stock is not enough to restrict the stock cats ??In the end it's a cat and it robs power.

[thebigragu99]

Originally Posted by RnmEvo9

Just go to a dyno and quit speculating already.

[jdbretz]

Originally Posted by thebigragu99

Well I have 135 and the exhaust is more restrictive then the 335.I looked into both cats,and they looked almost indentical inside as far as the honey comb flow.Your telling me running 6 to 7 psi more boost then stock is not enough to restrict the stock cats ??In the end it's a cat and it robs power.

I'm not arguing whether there are benefits to removing the secondary cats and reducing restriction. I agree with you on that aspect, however removing the secondaries will not gain you 15 whp as you stated. Yes of course there will always be some gains by freeing up restrictions, but it is proportional to the amount of exhaust flow you are trying to push through it. At 14.5 psi, the restriction of the secondary cats present, but not huge. Yes they are robbing some power (3-5 whp maybe) but not to the extent you imply. At higher boost levels, there is more power to be gained as the restriction becomes greater and having a free flowing setup allows for those additional exhaust gases to escape.

I'm not sure what you are seeking anymore. If you want to know what your car is putting out, then get it on the dyno. Be sure to do a run in bypass mode if you don't already have a baseline dyno run on the car. Without a baseline, the dyno isn't nearly as useful.

[Jeff@TopGearSolutions]

Originally Posted by jdbretz

I'm not arguing whether there are benefits to removing the secondary cats and reducing restriction. I agree with you on that aspect, however removing the secondaries will not gain you 15 whp as you stated. Yes of course there will always be some gains by freeing up restrictions, but it is proportional to the amount of exhaust flow you are trying to push through it. At 14.5 psi, the restriction of the secondary cats present, but not huge. Yes they are robbing some power (3-5 whp maybe) but not to the extent you imply. At higher boost levels, there is more power to be gained as the restriction becomes greater and having a free flowing setup allows for those additional exhaust gases to escape.

I'm not sure what you are seeking anymore. If you want to know what your car is putting out, then get it on the dyno. Be sure to do a run in bypass mode if you don't already have a baseline dyno run on the car. Without a baseline, the dyno isn't nearly as useful.

+ 10,000

[thebigragu99]

Originally Posted by jdbretz

I'm not arguing whether there are benefits to removing the secondary cats and reducing restriction. I agree with you on that aspect, however removing the secondaries will not gain you 15 whp as you stated. Yes of course there will always be some gains by freeing up restrictions, but it is proportional to the amount of exhaust flow you are trying to push through it. At 14.5 psi, the restriction of the secondary cats present, but not huge. Yes they are robbing some power (3-5 whp maybe) but not to the extent you imply. At higher boost levels, there is more power to be gained as the restriction becomes greater and having a free flowing setup allows for those additional exhaust gases to escape.

I'm not sure what you are seeking anymore. If you want to know what your car is putting out, then get it on the dyno. Be sure to do a run in bypass mode if you don't already have a baseline dyno run on the car. Without a baseline, the dyno isn't nearly as useful.

I was saying 15 whp or so cause of the 1 setup.Yes if I dyno,I will make sure that map 0 is first used.I have to find time to go up there,the roads suck here and don't like driving up there.It's the nearest one near me,that actually reads correctly.