Ikon Posted August 3, 2011 Report Share Posted August 3, 2011 Hi guys, can someone explain or post a link to what MPI stands for? And an elementary overview of the benefits & how it works in a TSI? Thanks Link to comment Share on other sites More sharing options...
ekstatixx Posted August 3, 2011 Report Share Posted August 3, 2011 MpiMulti port injection4 injectors from fuel rail into their own cylinder Stock tbiThrottle body injection2 injectors that spray into the throttle body Mpi can be tuned for more hp, or for better fuel economy. Not recommend for rookie mechanics. Trust me, my Mpi tuning has been quite a challenge Link to comment Share on other sites More sharing options...
Ikon Posted August 3, 2011 Author Report Share Posted August 3, 2011 What's the cost of the MPI conversion parts? And true HP gains & mpg improvements? Is the worth the $ on a daily driver with s few mods(exhaust,filter & boost controller)? Also is there a link that shows 0-60 & 1/4 times with HP gains certain mods whether bolt on or internal engine mod? Looking to get into an 89 TSI' 5spd again the last one we had those simple bolt on mods & had no idea how much of a gain over stock we had. It felt much faster BUT we know how that goes.... Link to comment Share on other sites More sharing options...
on4now4 Posted August 3, 2011 Report Share Posted August 3, 2011 IMO if your looking to stay under 300hp it really is not worth it. your gonna spend at least 1000 in parts alone and alot of time or money getting it tuned. you can achieve 30mpg on a stock tbi car and a really reasonable amount of power. Link to comment Share on other sites More sharing options...
ekstatixx Posted August 3, 2011 Report Share Posted August 3, 2011 You will spend over $1000 in all parts alone. If you get a good fuel computer it can cost you $1000 alone. Most modded magnas go for around $500. You need a mustang tb, 3 bar map sensor, custom ic piping. It adds up. There is a full setup for sale for $1750 in parts for sale now, and its far less than he paid. There's also a bolt on hurricane setup for $2000 for sale too. Then it would need to be tuned on top of that.It makes the car a whole new beast by far but its no easy or cheap process Link to comment Share on other sites More sharing options...
QuestFan Posted August 3, 2011 Report Share Posted August 3, 2011 For a daily I would just stick to the TBI setup. There are a few things you can do to get some good hp #'s out of the stock setup and not go through as many headaches and $$. If you use your car as a daily and you go with MPI then you will need to find another means of transportation as backup untill you can be certain your work and your tune is reliable. You WILL run into problems that will force your car to have some downtime. My car has seen plenty of down time. I wish I would have stayed with the stock setup and just did the mods necessary to get more power. I got in over my head with all this and have regreted it ever since. Link to comment Share on other sites More sharing options...
QuestFan Posted August 3, 2011 Report Share Posted August 3, 2011 http://www.starquestclub.com/forum/index.php?showtopic=109352PHINKO: the starter of above link has a pretty bad tail MPI setup. He got my car running and found plenty of mistakes. Unfortunatly I ran out of money and he did not get to finish his magic. Link to comment Share on other sites More sharing options...
Ikon Posted August 4, 2011 Author Report Share Posted August 4, 2011 It sounds like I don't need the MPI upgrade and it's a bit of a nuisance for a daily machine. But mods to 300 HP is great for my daily driver. What type of performance can one expect from a Conquest with that HP vs stock HP? Link to comment Share on other sites More sharing options...
TopDawg_43 Posted August 4, 2011 Report Share Posted August 4, 2011 (edited) A stock SQ with a good running engine will put 225~250 to the ground. An MPI car can go as high as you are willing to pay. I know of one car that has around 700hp. Below is a link to a post that shows some of the cars that have been built, without swapping the engine. http://www.starquestclub.com/forum/index.php?showtopic=8890 Edited August 4, 2011 by TopDawg_43 Link to comment Share on other sites More sharing options...
Funky Phil Posted August 7, 2011 Report Share Posted August 7, 2011 IMO if your looking to stay under 300hp it really is not worth it. your gonna spend at least 1000 in parts alone and alot of time or money getting it tuned. you can achieve 30mpg on a stock tbi car and a really reasonable amount of power. Amen Link to comment Share on other sites More sharing options...
Ikon Posted August 7, 2011 Author Report Share Posted August 7, 2011 Is there a link to horse power gains vs mods added? Link to comment Share on other sites More sharing options...
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