Team-BHP - Boosted Elantra CRDI!

Quote:

Originally Posted by rippergeo (Post 1260346)

I dont get it.
They always run lean OR
they are best when they run lean OR
They should run lean but the ratio can be played around with.

THey always run lean but the fuel/air ratio is played around with.

Here since a diesel doesn not have throttle, there is no driver control of airflow (gasoline has a throttle - so the airflow could be changed by the driver using a throttle). Gasoline engines usually run stoichometric (neither rich nor lean). and driver varies the air/cylinder to increase power.

Diesel at a constant rpm ,Airflow is fixed to the engine (assume an NA engine for simplicity). So if to vary the power from idle to full throttle the injection quantity is increased. Since more fuel cannot be injected than what could be burned by the air in the cylinder at that rpm, at max load the diesel engine runs stoichometric. At all other conditions it remains lean.

I don't have any experiance with tuning boxes and I don't know how they work, But i believe they make the extemely lean mixture a little less leaner. But they never make is rich- making rich only ends up in smoke.

For example, the Cummins ISB in our labs rated at 1100Nm
at 20% load lambda =3.206
at 40% load lambda =2.4337
at 60% load lambda =2.043

Note that it still remains around at 2 times air for the amount of fuel injected.

Hope this helps

Sameel sameel sameel.

I thought you left this after pointing out a blunder ?? You back agin withyour MAPS??lol:

Let me try again to get my question to you. Answer only to the part in quotes and capitals:)

"CAN THE DURATION INCREASE AS DONE BY THE PETES AND THE RAIL PRESSURE INCREASE BE DONE ON A STOCK BOSCH ECU??"

I know it is possible with an ETK enabled ECU and INCA. I want to know on a stock ECU.

"IF NOT DO YOU THINK PETES IS BETTER THAN THE STOCK BOSCH ECU??"

Well your call .. and Don't go away . I'd like an answer.

Note from the Team-BHP Support Team : Please use the "edit" button if posting within 15 minutes of the first post, instead of creating another back-to-back post

Also use "Multi Quote" option for quoting Multiple posts.

Quote:

Originally Posted by Jomz (Post 1260609)

Gasoline engines usually run stoichometric (neither rich nor lean). and driver varies the air/cylinder to increase power.

Not true most ECU's cycle between rich and lean to try and maintain stoic under constant load conditions but will go rich the moment the throttle is depressed or WOT situations. They typically maintain between 12.8 - 15.1 AFR depending on the conditions.

Quote:

Originally Posted by ashish22 (Post 1260341)

well with the latest vbox timings out for the boosted elantra, i really want to ask whether is it really worth the effort.

It is still not boosted, Test were done with petes & RD ecus only.

Quote:

Originally Posted by ashish22 (Post 1260341)

i really want to ask whether is it really worth the effort

Every mod i have done to it have showed results of atleast a sec less for 0-100 timings and its worthit atleast for me.

I have seen many people looking at just 0-100 timings but main point you are missing here is

How is the braking?
How is the handling?
How is the highway manners when you are above 180kmph.

Till date i have never seen a car under 11lakhs which can handle & brake like an elantra and ofcourse i am talking about stock.

In elantra you feel planted. Believe me after satya sat in my car he just sold 3 of his car and bought one.

Power is waste if you cant handle it.

I guess its time for you to drive one and feel it.
To get the max out of both worlds Elantra CRDI it is.

Quote:

Originally Posted by ashish22 (Post 1260341)

i think there's a slight confusion. Is he saying he used them both simultaneously or he sued them separately?

It was with both Petes stage II and RD ecu.

[quote=brraj;1260995]It is still not boosted, Test were done with petes & RD ecus only.

Oh, now I get why the figures with Pete's only were slower than a stock Elantra, probably because of the boost drop due to bigger intercooler and due to the boost leak you mentioned. With a boost controller to compensate for the loss due to the intercooler upgrade, the numbers should drop quite a bit. Good job Rajeev and kudos to you for actually putting the numbers on the forum. Very helpful mate. Cheers.

I have seen many people looking at just 0-100 timings but main point you are missing here is

How is the braking?
How is the handling?
How is the highway manners when you are above 180kmph.

Till date i have never seen a car under 11lakhs which can handle & brake like an elantra and ofcourse i am talking about stock.

In elantra you feel planted. Believe me after satya sat in my car he just sold 3 of his car and bought one.

Power is waste if you cant handle it.

I guess its time for you to drive one and feel it.
To get the max out of both worlds Elantra CRDI it is.

Spot on. Could not agree more :thumbs up

Edit : ashish, your TD is overdue mate, drive one and get a brother for your RS :D

Quote:

Originally Posted by brraj (Post 1260995)

I have seen many people looking at just 0-100 timings but main point you are missing here is

How is the braking?
How is the handling?
How is the highway manners when you are above 180kmph.

Till date i have never seen a car under 11lakhs which can handle & brake like an elantra and ofcourse i am talking about stock.

In elantra you feel planted. Believe me after satya sat in my car he just sold 3 of his car and bought one.

Power is waste if you cant handle it.

To get the max out of both worlds Elantra CRDI it is.

agree:

Extremely well said! BRAVO! clap:

By when are you going planning to dyno the boosted runs?

Quote:

Originally Posted by ashish22 (Post 1261039)

So how much improvement are you expecting after boost and when will the boost kick in and what would be the boost band??

If it shows 8.5 sec for 0-100, i am happy:).

Daily drive & highway - i want the boost to kick in only after 100kmph.
T-bhp drives - I want the boost to kick in at 50kmph;).

R&D is going on as to how much boost can our cars take? After final tuning will let you know.

Quote:

Originally Posted by maverick030581 (Post 1261049)

Oh, now I get why the figures with Pete's only were slower than a stock Elantra, probably because of the boost drop due to bigger intercooler and due to the boost leak you mentioned. With a boost controller to compensate for the loss due to the intercooler upgrade, the numbers should drop quite a bit.

pipe has been fixed back so now there is no boost leak.
I am yet to fix Intercooler for my elantra and the job should be completed within 2weeks, lets see.
Timings remains same.

Quote:

Originally Posted by kb100 (Post 1261090)

By when are you going planning to dyno the boosted runs?

Only after fitting inter cooler.

Quote:

Originally Posted by brraj (Post 1261143)

If it shows 8.5 sec for 0-100, i am happy:).

Raj, 9.9s-->100kmph is already too hot to handle. At 8.5, it might start flying. Any thoughts on putting on a heavier driver (like me) to keep it rooted and not develop wings?:)

Quote:

Daily drive & highway - i want the boost to kick in only after 100kmph.
T-bhp drives - I want the boost to kick in at 50kmph;).

Well, I think I now need to consider your offer of joining the tbbhp night meets, seeing your red beast fly by at that speed would be sheer bliss, even better if I have the steering wheel in my hands!

OT: Are you keeping a tag on the cost of all mods? That will make people like us know what kind of savings we need to do for the future of our babies!

Quote:

Originally Posted by kb100 (Post 1261233)

Oh - I was under the impression that was already done!

Any news on the brake front?

Its satyas car which had installed intercooler, am just fixing it now.

Brakes feels inadequate for a boosted elantra as tested in satyas car.
I even had plans to fit EBC brake pads but i got reviews that it works well but it has to heat up to show its performance and if there is a light scratch or crack in the rotors the pads fade very soon.
Suggestions are welcome.

Quote:

Originally Posted by nnandi (Post 1261245)

Any thoughts on putting on a heavier driver (like me) to keep it rooted and not develop wings?:)

even better if I have the steering wheel in my hands!

You will be in the driver seat for sure when we meet.

Quote:

Originally Posted by nnandi (Post 1261245)

OT: Are you keeping a tag on the cost of all mods? That will make people like us know what kind of savings we need to do for the future of our babies!

Cost of products is already mentioned in first page of this thread and keep 1-3k for installing those.

Quote:

Originally Posted by sameel (Post 1261876)

@ jomz ah the simple and straight question :D

YES its possible. simple and straight answer hope you are happy. :D

and yes its not simple. i cant let it out here. llol. but yes thadu has got a simple way of doing it. hehe. only back up will be a prob. i know how to back up but hey its his call. llol.

so stop picking up on my posts. will ya? llol.

hope doubts are clarified.
cheers !

It is not picking dude. It is asking again and again till you somehow understand the question and give a satisfactory answer. You explain stuff which is all over the place and does answer everything (even incriminating you) but not answering the question.

So as of now tadu knows how to reflash a STOCK ECU.. right?? As usual you cannot let out stuff :-). Will ask him how.

tadu are you listening??