[Tonylin335]

Has anyone dyno to see how much horsepower does it add to wheel with just JB4 map 1? No other mods

[Elie335]

most likely 315whp to 330 whp

[E90Vader]

there is no way. COBB 93 octane dynos 320whp and destroys JB4 stage 1..
JB4 map2 with DCI would dyno 320whp - 330 whp

I think JB4 map 1 is around 290

[Elie335]

Originally Posted by E90Vader

there is no way. COBB 93 octane dynos 320whp and destroys JB4 stage 1..
JB4 map2 with DCI would dyno 320whp - 330 whp

I think JB4 map 1 is around 290

seriously? 335i stock is 280 whp. map 1 on JB4 is 13 psi meanwhile stock psi IS 7.

[skinrock]

Originally Posted by Elie335

seriously? 335i stock is 280 whp. map 1 on JB4 is 13 psi meanwhile stock psi IS 7.

I agree - no way. JB4 Map 1 should be getting you around 340 pretty easily. I've seen a JB4 Map 1 dyno of 345hp.

[sonyakova]

Originally Posted by E90Vader

there is no way. COBB 93 octane dynos 320whp and destroys JB4 stage 1..
JB4 map2 with DCI would dyno 320whp - 330 whp

I think JB4 map 1 is around 290

You cant even install a dp or anything else for that matter,and or know when the shop doing your installs are screwing you on the install charges!.You ask for advice on here then don't listen to it and cant read.........

Hooked on Phonics Learn to Read......nub

Now your gonna jump in here and throw dyno numbers out there.... with your ZERO credibility on this FOURM .were you dropped on your head as a child or what! please give us some excuse for your lack of basic Knowledge,Struck by lightning something!!!!!

Don't go away mad, just go away....

[Shellacked135i]

Jb4 Map 1 is not 290 WHP, that is nearly stock WHP.

~330 sounds more realistic.

[rmdvrs]

Originally Posted by E90Vader

there is no way. COBB 93 octane dynos 320whp and destroys JB4 stage 1..
JB4 map2 with DCI would dyno 320whp - 330 whp

I think JB4 map 1 is around 290

Dude are you serious. Where are you getting your info from. While Cobb is a great tune, it is conservative in comparison to the piggyback tunes (may be different once stage two comes out) so you may want to check your numbers again and rethink the whole destroys comment.

Our cars stock dyno between 270-280 so how would it makes sense that raising boost from 8psi to 13psi which is what map 1 does give you only 10 rwhp.

I would say 315-330 (conservatively) sounds about right depending on mods and condition.

[E90Vader]

Car dyno's 267whp stock... I've seen many users with COBB 91 octane dyno and it runs 305WHP. I've raced my friends JB4 map 1 when I had COBB and I pulled slightly.
COBB 93 octane dynos at 320WHP. I've raced my friends JB4 map 2 and pulled when we got to 140

I'm not bullshitting numbers.. JB4 map1 gives you about 40whp over stock

[E90Vader]

Its a wonderful tune! I'm not bashing it, I'm just pointing out real life!
COBB 93 octane won't even hit 345whp and it will pull on JB4 map 2 slightly..

I'm switching to JB4 myself, I've already sold COBB

[rmdvrs]

267 stock is on the low end. Most people in the US on average have dyno'd stock between 270-280 (I remember one a long time ago around 290). With JB3 they hit the 315-330 mark no problem. I'm not saying your bullshitting numbers but what we have seen on the boards from posted dyno's are much higher numbers than that.

As far as your friend we would need more info because there are more things that can influence you pulling on him slightly than just the tune. Like At vs. MT, coupe vs. sedan, octane, weather, etc. Not saying you didn't pull on him. You can't compare Cobb 93 octane to JB4 map 1 91 octane. People with JB4 map 1 with 91 octane have beat Cobb 91 octane majority of the time. If your comparing the Cobb 93 octane map then you would have to compare it to JB4 map 2. There is a post (search for it) that compares the JB and Cobb maps that was posted when Cobb came out.

You may be pointing out your real life but that doesn't negate all the real life dyno's and posts we have had previously showing things differently. Other than your own experience where else did you see a Cobb 93 octane pull on JB4 map2? I'm asking because on the boards we have seen the opposite. JB4 map 2 with 93 octane will pull on Cobb 93 octane.

Why are you switching if it worked so well, especially if according to your numbers Cobb gives you more hp and is faster? Just asking, not trying to start anything.

[skinrock]

Originally Posted by E90Vader

Car dyno's 267whp stock... I've seen many users with COBB 91 octane dyno and it runs 305WHP. I've raced my friends JB4 map 1 when I had COBB and I pulled slightly.
COBB 93 octane dynos at 320WHP. I've raced my friends JB4 map 2 and pulled when we got to 140

I'm not bullshitting numbers.. JB4 map1 gives you about 40whp over stock

Except that's not true. I attached a simple stock vs. JB4 dyno to prove that.

Originally Posted by E90Vader

Its a wonderful tune! I'm not bashing it, I'm just pointing out real life!
COBB 93 octane won't even hit 345whp and it will pull on JB4 map 2 slightly..

I'm switching to JB4 myself, I've already sold COBB

Except your cobb was running higher boost with 94 octane and your opponent had 91 octane and ran Map 2 without supporting mods (he admitted it) and got bad timing and knock. Not a fair comparison.

Originally Posted by rmdvrs

As far as your friend we would need more info because there are more things that can influence you pulling on him slightly than just the tune. Like At vs. MT, coupe vs. sedan, octane, weather, etc. Not saying you didn't pull on him. You can't compare Cobb 93 octane to JB4 map 1 91 octane. People with JB4 map 1 with 91 octane have beat Cobb 91 octane majority of the time. If your comparing the Cobb 93 octane map then you would have to compare it to JB4 map 2. There is a post (search for it) that compares the JB and Cobb maps that was posted when Cobb came out.

edit: The forum I tried linking to is censored here. Ridiculous. Well, I would ******* it but I don't want to piss off the mods. Just google stock 335i vs jb4 and it should be a few results down. I pretty much summarized why it wasn't a fair race, though.

[rmdvrs]

Originally Posted by skinrock

Except that's not true. I attached a simple stock vs. JB4 dyno to prove that.

Is that dyno of map 1? That's around a 70hp difference. I was being conservative which is why i said 315-330 but you're right those numbers have been pretty typical.

Originally Posted by skinrock

Except your cobb was running higher boost with 94 octane and your opponent had 91 octane and ran Map 2 without supporting mods (he admitted it) and got bad timing and knock. Not a fair comparison.

That's what I wanted to know. If that is true then you can't compare. Even with 94 octane running the Cobb 93 octane map and the other car running 91 octane, no supporting mods and timing being pulled and the car knocking he was only able to pull on him a little. What does that tell you.

Originally Posted by skinrock

edit: The forum I tried linking to is censored here. Ridiculous. Well, I would ******* it but I don't want to piss off the mods. Just google stock 335i vs jb4 and it should be a few results down. I pretty much summarized why it wasn't a fair race, though.

Maybe things are different in Calgary

[skinrock]

Originally Posted by rmdvrs

Is that dyno of map 1? That's around a 70hp difference. I was being conservative which is why i said 315-330 but you're right those numbers have been pretty typical.

That's what I wanted to know. If that is true then you can't compare. Even with 94 octane running the Cobb 93 octane map and the other car running 91 octane, no supporting mods and timing being pulled and the car knocking you were only able to pull on him a little. What does that tell you.

Maybe things are different in Calgary

It's Map 1. I think it's safe to say most people will see anywhere from 330-345 depending on the actual dyno and conditions, I'm guessing this is one of the higher stock Map 1 runs. Either way - not a mere 40 over stock and definitely not 290 for Map 1 and 320 for Map 2.

[Magic-Man]

So what are the facts then? How much more HP does a Cobb tune give you over a JB4 93 octane tune?

[rmdvrs]

Originally Posted by skinrock

It's Map 1. I think it's safe to say most people will see anywhere from 330-345 depending on the actual dyno and conditions, I'm guessing this is one of the higher stock Map 1 runs. Either way - not a mere 40 over stock and definitely not 290 for Map 1 and 320 for Map 2.

I figured but wanted to make sure cause 370 is on the higher end for map 1. Exactly, In general 330-345 is probably where most are at but I tend to always be conservative in my estimates that way I don't over estimate and talk actual numbers when I have concrete evidence like a dyno graph for example.

Yeah either way not a mere 40 over stock and 290/320. People wouldn't spend the kind of money they do on piggybacks if that's all they gained. At those levels and price (especially back when they first came out) Dinan would be a better option then since it also gives you a warranty.

[rmdvrs]

Originally Posted by Magic-Man

So what are the facts then? How much more HP does a Cobb tune give you over a JB4 93 octane tune?

You can't generalize like that but if you must then you have the question backwards. JB4 in general will gain you more hp than a Cobb tune at all stages (when comparing each others equivalent maps). Cobb 93 octane tune is not the same as a JB4 93 octane tune. For example you can run a Cobb 93 octane tune vs. a JB4 tune on map 1 running 93 octane and get different results than if the JB was on map 2 with 93 octane.

Otherwise you have to compare maps, octane, mods, etc.

[Magic-Man]

Originally Posted by rmdvrs

You can't generalize like that but if you must then you have the question backwards. JB4 in general will gain you more hp than a Cobb tune at all stages (when comparing each others equivalent maps). Cobb 93 octane tune is not the same as a JB4 93 octane tune. For example you can run a Cobb 93 octane tune vs. a JB4 tune on map 1 running 93 octane and get different results than if the JB was on map 2 with 93 octane.

Otherwise you have to compare maps, octane, mods, etc.

Contradicts what people have said then, no? I am reading most folks posting that the Cobb cars have put down higher WHP than the JB4 cars.

So if the JB4 cars are putting down better numbers, why are people letting Cobb get away with charging double for less power?

[Shellacked135i]

Originally Posted by Magic-Man

Contradicts what people have said then, no? I am reading most folks posting that the Cobb cars have put down higher WHP than the JB4 cars.

So if the JB4 cars are putting down better numbers, why are people letting Cobb get away with charging double for less power?

LOL Do some research.

Its how they tune thats different. Power is nothing without control.

How does BMW get away with charge $45K for a car with 300 HP when you can buy a 370z with 330 HP for less money....

Sounds like a dumb question right?

[s2k_335i]

My stock is 270 and with Procede, intake, DP, FMIC, Intake, Charge pipe, Cyba scoop, i was around 380-390 depend on the weather condition. The east seem to produce higher number than in TX and Cali. Just a tune only for both Cobb and JB4, i would think they run about 310-320 depends on the weather and location?

[Jeff@TopGearSolutions]

Aye carumba

[bigup]

My car was the JB4 comparison car - to be fair, my HPFP was dying, and during the runs, my car was bogging very hard between shifts 3->4 on Map 2 (it was still on 94 octane at the time, btw, not 91).

With a new (3rd!) HPFP, and a DCI, on 94 octane, it runs like a charm with zero bogging and decent logs. I also have a meth-kit en-route, which will improve things even more.

We would have compared tunes again, but Vader now has bolt-ons, and is changing to JB4, in order to take full advantage of those bolt-ons.

Our altitude also makes a difference in numbers -- a dyno day is planned in a couple of weeks, so we will have results of a JB4+Intake+DP+FMIC car vs a JB4+Intake+Meth car.